JPH0721187A - Machine translation system - Google Patents

Abstract

PURPOSE:To save time of a user for postediting and improve the quality of a translated sentence by blinking and displaying words and phrases sourcing a dictionary that the user specifies and editing the translated sentence while referring to them when the translated sentence is edited after being translated by the machine translation system. CONSTITUTION:While an input sentence and an output sentence are displayed at a display part (S61) after a translating process, a menu showing the kind of selected dictionary data is displayed (S63) at the display part with a used dictionary menu key according to a flag which is stored in a dictionary control part and indicates whether or not a technical dictionary and a user dictionary are used, and which dictionary's use state is checked is selected and specified (S64-S67). Then when the user dictionary is selected (S68, YES), a display control part checks a source flag stored in a translation part while made correspond to the output sentence and blinks and displays the words sourcing the user dictionary on the display part (S69).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine translation system which, when a translated text is edited after the translation work is performed by using the machine translation apparatus, clearly indicates to the user the source of the dictionary in the apparatus used for the translation. It relates to the device.

[0002]

2. Description of the Related Art Conventionally, it is not enough to use commercially available dictionaries and dictionaries to refer to translation work. In addition, the knowledge of translators and a glossary originally collected are used together. To be done. This situation is the same for machine translation.

In general, as a dictionary used in a system such as machine translation, a basic dictionary which is given a general usage and a translated word and covers the widest range of entries is used as a first dictionary. It is held internally. Further, a field-specific specialized dictionary for words and phrases that depend on a specific field is stored inside the system as a second dictionary, and this specialized dictionary can be used properly according to the purpose. This includes words and phrases that appear only in a specific field, words and phrases that have special uses, words and phrases whose translations change, and so on. This allows words that are dependent on a particular field to be given a general translation of that field.

However, since the actual translated sentence contains a considerable proportion of terms and phrases used by each user, the basic dictionary and specialized dictionary prepared in advance by the system are not enough. It is not enough by any means, and there are unregistered words.

Further, even if a word is entered in a basic dictionary or a specialized dictionary, its translated word is not necessarily the most suitable for the user. There are some clichés and unique expressions used by a specific user, which are not translated literally but can be translated only by the desired translation. For example,
In the Japanese kanji notation for the reading "Kama",
There are "kiln", "kettle", "sickle", etc. In addition, even if you say "kiln" in a bite, when it comes to English, "kil"
"n", "oven" for baking bread, "furnance" for furnace
For example, even if you use a "kettle,"
There are various "bites" such as "ot", "kettle", and pots "ca (u) ldron", and "sickle" and "sickle" and "hook". Furthermore, as a sewing machine term, a bobbin case in which a bobbin wound with a bobbin thread is put is called "kama", and its translation is "shuttl
e ”. When translating text in the field of sewing machines, if a translated word other than“ shuttle ”appears,
The user can never be satisfied because it is probably a mistake. In this way, you can casually use a "kama"
Even with the notation, it can be understood that the meaning represented by the type of text is limited and can be translated in various ways.

That is, in order to perform the translation process accurately, it is necessary to select and use a dictionary containing a translation word according to the type of text to be translated. Since the basic dictionary and the specialized dictionary provided by the system are general ones, the user dictionary is required as the third dictionary that can limit the use of the word at the same time as selecting a plurality of specialized dictionaries. . In some cases, it may be necessary to develop a plurality of user dictionaries depending on the field or the user among the user dictionaries. In other words, if there is no user dictionary, it will not be possible to translate well. Therefore, under such circumstances, the development of the user dictionary by the user himself is indispensable.

[0007]

However, unlike the basic and specialized dictionaries that are comprehensively constructed, the user dictionary also includes words and phrases that the user created on the fly, and the processing of the system. Since the procedure is not taken into consideration, the credibility is lower than that of the basic dictionary. Therefore, the cause of the translation failure may be a part of speech in the user dictionary or a defect in individual information.

However, it is difficult for the user to find a defect only from the translated text. In addition, even if a word or phrase has different meanings or translations due to different fields being used, if it is replaced with the other language once in the translation, each individual word Determining the proper translation is a difficult task, even for an expert in the field, and a very laborious task. In particular, when a plurality of users use one system, there is a risk that a user who does not have specialized knowledge may edit a technical term that should not be corrected because he / she does not know the technical term.

On the other hand, once the user dictionary is created, there is no guarantee that the subsequent translation will be complete. That is, when a user carelessly creates a user dictionary for a phrase having both a special usage and a basic usage, a normal sentence may not be translated well.
For example, in "mold", "flow into mold", "remove from mold"
In the case of "casting mold" such as "die", "mold", "castin" according to various fields or usages.
The translation word "g" is required. Also, "m" that stands for "model"
There is also odel ”and“ type ”for“ type ”. Although the meaning of "kama" is roughly divided according to the field, "model" and "type" of "type" do not depend on the field, and "word" used in any field. And is a "translation".

Therefore, "die" is added to the "type" in the user dictionary.
If you register as or "mold", for example, "general type",
"Type" such as "special type" is not translated as "general model" but as "general die". That may be fine, but it can be inconvenient. But,
After all, translations such as "die" and "mold" for "type" are necessary at the level of specialized and user dictionaries.
When the user used a specialized dictionary and registered it in the user dictionary by himself, he had to find "general die" in the translated text.

The present invention has been made to solve the above-mentioned problems, and when a translated sentence is edited after the translation work is performed using the machine translation device, the dictionary designated by the user is used as the source. By highlighting the phrase of the translated word to allow the user to edit the translated sentence while referring to it, it is possible to reduce the post-editing time of the user and improve the quality of the translated sentence. The purpose is to provide a machine translation device.

[0012]

In order to achieve this object, a machine translation device according to a first aspect of the present invention provides an input means for inputting an original sentence in a source language, a headword, a translated word corresponding to the headword, A first dictionary that stores knowledge information such as a wording necessary for translating an entry word, an entry word that depends on a specific field, a translation word corresponding to the entry word, and a translation of the entry word A second dictionary for storing knowledge information necessary for the user, an arbitrary headword, an arbitrary translated word for the headword, and a user dictionary for storing knowledge information necessary when translating the headword, The dictionary creating means for creating the user dictionary, the selecting means for selecting at least one of the second dictionary and the user dictionary, and the second dictionary and the user dictionary based on the selection by the selecting means. Control the priority, each of the above A translation means for performing a translation process using a book, an output means for displaying a translated sentence in the target language obtained by the translation means, and a designating means for designating one dictionary type from each dictionary used for the translation process. , When the dictionary type is designated by the designating means, if the headword of the source language belonging to the dictionary used for the translation process is present in the source sentence, the source sentence or the corresponding headword or translated word is emphasized. An emphasizing means for outputting is provided.

Further, the machine translation apparatus of claim 2 is provided with output control means for displaying the type of dictionary used in the translation processing on the output means as needed, and each dictionary displayed on the output means. One of the dictionaries is designated by the designating means, and the emphasizing means highlights the translated word or the corresponding headword or the original sentence whose source is the dictionary designated by the designating means.

[0014]

In the machine translation device according to claim 1 having the above structure, the translation means includes a first dictionary and a second dictionary.
The user performs translation work using the user dictionary created by the dictionary creating means, and the output means displays the translated text in the obtained target language. After the translation work, when editing the translated sentence, the designation means designates one dictionary type from each dictionary used in the translation process, and the emphasis means designates the dictionary type by the designation means, When a headword of a source language belonging to the dictionary used in the translation process is present in the source sentence, the user refers to it by highlighting the source sentence or the corresponding headword or translated word, and the user dictionary Edit the translation by creating, modifying, or replacing it with another translation.

Further, in the machine translation device of the second aspect, the type of each dictionary used for the translation processing is displayed on the output means by the output control means, and each dictionary displayed on the output means by the designation means. One of the dictionaries is designated, and the translated word from the dictionary designated by the emphasizing means or the corresponding headword or original sentence is highlighted.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a Japanese-English machine translation device embodying the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram schematically showing the hardware configuration of a machine translation device according to the present invention. Figure 1
As shown in FIG. 1, this machine translation device includes a display unit 11 including a CRT, an input unit 12 including a keyboard, a printing unit 13 including a laser printer, a hard disk, an optical disk, and the like. An electronic dictionary unit 14 stored in the computer and used for translation processing, a storage unit 15 for storing the input sentence input from the input unit 12 and a translated sentence as a pair, and editing for controlling the entire system. Unit 16, a translation unit 17 that executes translation processing, a dictionary selection unit 18 that allows the user to select each dictionary in the electronic dictionary unit 14 that is used for translation processing, and an electronic dictionary unit selected by the dictionary selection unit 18. A dictionary control unit 19 that controls the dictionaries of 14, a dictionary editing unit 20 that edits the dictionary in the electronic dictionary unit 14 and searches dictionary information, and a display control unit 21 that controls the data sent to the display unit 11. It is constructed from.

The electronic dictionary unit 14 includes a basic dictionary 31 and a specialized dictionary 32 which the system has in advance.
The user dictionary 33 allows the user to register necessary words and phrases via the dictionary editing unit 20. Specialized dictionary 32
Although there can be a plurality of user dictionaries 33 and one user dictionary 33, one user dictionary 33 is used for convenience in the present embodiment.

FIG. 2 shows the structure of the dictionary data of the basic dictionary 31, and the individual dictionary information includes an entry word 51, a part of speech 52 of the entry word, and a translation word 5 corresponding to the entry word 51.
3 and its translation part of speech 54, and knowledge information 55 such as wording and meaning necessary for translating the headword 51.

FIG. 3 shows the structure of the dictionary data of the specialized dictionary 32. As with the basic dictionary 31, each dictionary information includes an entry word 61 that depends on a specific field and the entry word of the entry word. The part-of-speech 62, a translated word 63 corresponding to the headword 61, a part-of-speech 64 of the translated word, and knowledge information 65 necessary for translating the headword 61, such as wording and meaning.

Further, FIG. 4 shows the structure of the dictionary data of the user dictionary 33. Like the basic dictionary 31 and the specialized dictionary 32, each dictionary information includes a headword 71 and a part of speech 72 of the headword 71. An arbitrary translation 73 for the entry word 71, a part of speech 74 of the translation word 73, and the entry word 7
Knowledge information such as wording and meaning necessary for translating 1
It consists of and.

Next, a basic translation operation of the machine translation device configured as described above will be schematically described with reference to FIG.

First, the Japanese language which is the source language is written by operating the character keys of the input unit 12 (S1). When the translation execution key (not shown) of the input unit 12 is operated (S
2), the translation control process is started, the Japanese sentence input from the input unit 12 is edited in the editing unit 16 into an appropriate form as needed, and is sent to the translation unit 17, where the translation unit 17 electronic dictionary. Using the dictionaries 31, 32, and 33 in the section 14, the Japanese sentence is translated into the partner language, English, and the output sentence is obtained (S
3). Next, the editing unit 16 stores the input sentence and the output sentence as a pair in the storage unit 15 (S4). And the editorial department 1
6 reads the data of the input sentence and the output sentence from the storage unit 15 and displays them on the display unit 11 (S5).

If the output sentence (translated sentence) is incorrect or unnatural, the Japanese sentence of the input sentence is re-edited and re-translated, or the contents of the user dictionary 33 are changed and re-translated. Or correct the output sentence (translated sentence) directly.

When the Japanese of the input sentence is to be edited again and re-translated, the input sentence edit key (not shown) of the input unit 12 is operated (YES in both S6 and S7) and then displayed on the display unit 11. The input sentence is corrected by operating the character keys of the input unit 12 or the like to create a new input sentence (S1). Then, the translation execution key is operated (S2), and the translation process is performed again (S3 to S5).

When retranslating after changing the contents of the user dictionary 33, a dictionary edit key (not shown) of the input unit 12
Operate (S6 ・ YES, S7 ・ NO, S8 ・ YE
S), the editing unit 17 searches the information of the user dictionary 33 in the electronic dictionary unit 14 and displays the result on the display unit 11,
After the necessary words and phrases are registered in the user dictionary 33 by the dictionary editing unit 20 or the already registered dictionary information is corrected (S9), the translation execution key is operated (S6.YE
Both S, S7 and S8 are NO, S10 and YES), and the translation process is performed again (S3 to S5).

When the output sentence is modified, the input unit 1
After operating the output sentence edit key 2 (not shown) (S6.
YES, S7 / S8 / S10 are NO, S11 / YE
S), the output sentence is directly modified by operating the character keys or the like of the input unit 12 and the output sentence is stored in the storage unit 15 (S12).

When the translation result desired by the user is obtained, a print key (not shown) is operated (S6.
YES, S7 / S8 / S10 / S11 / S13 are all N
O), and the print unit 13 outputs the print sheet (S1).
4). To end this control, the translation end key (not shown) is operated in S6 (S6, YES, S7).
・ S8 ・ S10 ・ S11 are NO, S13 ・ YES).

The translation process in the translation unit 17 in S3 will be described with reference to FIG.

The morphological analysis unit of the translation unit 17 is the editing unit 16
For each word constituting the input sentence sent from the morpheme analysis unit 41, using the morphological analysis rule 41 in the morpheme analysis unit, the dictionary data in the electronic dictionary unit 14 is searched, the words constituting the input sentence are cut out, and the part-of-speech information is obtained. Are added to the morphological analysis result (S21). Next, the analysis unit of the translation unit 17 receives the morphological analysis result, and uses the analysis grammar 42 in the analysis unit,
The Japanese structure is analyzed (S22). Also, the translation unit 17
The conversion unit converts the Japanese structure analyzed by the analysis unit into an English structure using the conversion grammar 43 in the conversion unit (S23). Subsequently, the generation unit of the translation unit 17 uses the generation grammar 44 in the generation unit to determine the English word order from the English structure converted by the conversion unit, the tense, the aspect,
The person name is processed to generate an output sentence composed of an English word string (S24). Then, the morpheme generation unit of the translation unit 17
Using the morpheme generation rule 45 in the morpheme generation unit, an inflectional form such as plural nouns, past verbs, past participles, etc. is generated for the English word string generated by the generation unit to obtain an output sentence. (S25).

Further, when translating, the user needs to select the structure in which the specialized dictionary 32 or the user dictionary 33 in the electronic dictionary unit 14 is used as the dictionary data most suitable for the input sentence. This designation method will be described with reference to FIG.

First, when the user operates a dictionary menu key (not shown) of the input unit 12, the dictionary selection unit 18 is activated and the menu is displayed on the display unit 11 (S31).
Here, the next candidate key and the selection key (both not shown) of the input unit 12 are operated to select which dictionary to use, and select and specify which dictionary to use (S32). Then, when the user dictionary 33 is selected (S33, YES), the dictionary control unit 19 sets a flag indicating that the user dictionary 33 has been selected, that is, sets the flag to the ON state (S3).
4). When the specialized dictionary 32 is selected (S35, Y
ES), the dictionary control unit 19 turns on the flag indicating that the specialized dictionary 32 has been selected (S36). In this embodiment, it is assumed that the user has selected both the user dictionary 33 and the specialized dictionary 32. Then, the dictionary control unit 19 sends the flag data to the translation unit 17 (S3).
7).

It should be noted that a plurality of user dictionaries 33 and specialized dictionaries 32 are provided, and when a plurality of dictionaries are selected, the flags of those dictionaries are set and the flag data is transmitted to the translation unit 17. If neither the user dictionary 33 nor the specialized dictionary 32 is selected, the flag data of the basic dictionary 31 in the translation unit 17 is always ON although the flag data is not transmitted to the translation unit 17. In the translation process, only the basic dictionary 31 will be used.

The translation unit 17 looks at the state of the flag, and if the user dictionary 33 is selected, the translation process is given the highest priority, and if the specialized dictionary 32 is selected, the user dictionary 33 is selected.
Next, the translation process is performed with priority. A detailed flow of the dictionary search in the morphological analysis process in S21 in the translation process will be described with reference to FIG.

In the input sentence sent to the translation unit 17, first, the words forming the input sentence are cut out by the morphological analysis unit (S41). At this time, the morphological analysis unit is the translation unit 17
In accordance with a flag indicating whether or not the basic dictionary 31, the specialized dictionary 32, and the user dictionary 33 stored in are used (S42,
(S45), each dictionary data in the electronic dictionary unit 14 is searched (S43, S46, S48).

Here, the flag of the user dictionary 33 is ON.
Since it is in the state (YES in S42), the dictionary data of the user dictionary 33 is searched first (S43). And
If the dictionary is closed, a source flag indicating the source of the dictionary in which the entry word is searched is added (S44). Next, since the flag of the specialized dictionary 32 is ON (S45
-YES), the dictionary data of the user dictionary 32 is searched (S
46), a source flag indicating the source of the dictionary in which the entry word is searched is added (S47). Subsequently, the dictionary data of the basic dictionary 31 is searched (S48), and a source flag indicating the source of the dictionary in which the entry word is searched is added (S49).

Then, if there is a word searched for here with the same headword and the same part of speech (S50.Y).
ES), the entry word of the dictionary having the higher priority remains, and the other entry words are discarded (S51). In this case, the priority order is the user dictionary 33, the specialized dictionary 32, and the basic dictionary 31 in that order. If the headword is the same but the part of speech is different, it remains as a word candidate. After this, the plurality of candidates are the same as S2.
After entering the analysis section in 2, the candidates are narrowed down.
In this way, the input sentence is divided into the constituent words, and the subsequent processing is performed with the source flag indicating which dictionary was used as the source and the part-of-speech information being added, and finally the source flag indicating the source is set. The output sentence is generated by storing the output sentence in association with the words constituting the output sentence.

When the output sentence is completed, the user, when translating a certain input sentence, judges which dictionary should be used in order to efficiently perform post-editing of the output sentence and selects an appropriate dictionary. There is a need to. Referring to FIG. 5 and FIG. 9, the determination method when the user selects a dictionary and the efficient post-editing flow are taken as an example of the input sentence “use a half-rotation type as this bite type”. explain.

The case of the example sentence will be briefly described. The first "type" may be the translation word "mold" registered in the user dictionary 33, but the second "type" may be the user dictionary 33. Instead of "mold", "type" representing "type" is appropriate.

Also, the translation unit 17 stores the source flag indicating the source of the dictionary using the words in the input sentence in the translation process in association with the words constituting the output sentence and ends the translation process. is doing. Further, the editing unit 16 stores the input sentence and the output sentence which is the translation result in the storage unit 15 as a pair.

In this state, when the user operates the translation end key of the input unit 12 in S6 of FIG. 5 as described above (S11, NO), the translation process ends and the editing control shown in FIG. 9 starts. Then, the head portions of the input sentence and the output sentence are displayed on the display unit 11 (S61). Then, the display control unit 2 is operated by operating a not-shown used dictionary menu key of the input unit 12.
1 is activated (S62). The display control unit 21 includes a specialized dictionary 32 and a user dictionary 33 stored in the dictionary control unit 19.
According to the flag indicating whether or not is used, as shown in FIG. 10, a menu indicating the type of dictionary data selected by the user is displayed on the display unit 11 (S63).

Select and specify which dictionary the usage status is to be checked for. Specifically, the next candidate key of the input unit 12 (S64
・ YES, S65 / S66 are both NO, S67) or the selection key (S64 / S65 is both YES) is operated to select and specify. Then, when the user dictionary 33 is selected (S
64, S65, and S68 are all YES), the display control unit 21 checks the source flag stored in the translation unit 17 in association with the output sentence, and highlights the word whose source is the user dictionary 33 on the display unit 11. That is, the display is made to blink (S69). As shown in FIG. 10, in this case, two “molds” which are sourced from the user dictionary 33 are displayed in a blinking manner.

As a result, the user has the "type" of "die".
It can be recognized that the translation is "mold" instead of "casting" or "casting", and it is very easy to verify that the translation of "type" is used correctly. it can. However, the second "type"
Since "type" representing "type" is appropriate instead of "mold" in the user dictionary 33, the user operates the output sentence edit key of the input unit 12 during this highlighting (S6).
4. YES, S65 and S66 are both NO), and the output sentence correction process similar to the above 12 can be performed in S67. Specifically, by deleting “mold” and inputting “type”, the modified output sentence is stored in the storage unit 15. It is also possible to replace the translated word by checking the other dictionary information by activating the dictionary editing unit 20.

On the other hand, similarly, when the user selects the specialized dictionary 32 (YES in both S64 and S65, S65).
68 / NO, S70 / YES), the display control unit 21 checks the source flag stored in the translation unit 17 in association with the output sentence, and highlights the word whose source is the specialized dictionary 32 on the display unit 11. (S71). As shown in FIG. 11, in this case, “shuttle” originating from the specialized dictionary 32 is displayed in a blinking manner. In this case, the user can also see at a glance that the specialized expression "shuttle" is appropriate for the "kama", and it is not necessary to correct this.

When the user operates the end key (S64 / YES, S65 / NO, S66 / YES),
The highlighting on the display unit 11 is terminated, and this control is terminated.

With this configuration, the user can accurately recognize the source dictionary of the translated words, and can unify or confirm the words that are the translated words specific to each user and the specialized translated words. Also, the user can very easily verify whether or not each translated word is used in the correct state. Furthermore, it is also very effective for verification when manipulating a plurality of user dictionaries and specialized dictionaries for translation processing, as well as how to combine dictionaries and determine priorities.

Further, in the above-mentioned embodiment, the case has been described in which the user performs translation using the existing user dictionary 33 and specialized dictionary 32 and verifies the output result, but the data in the user dictionary 33 is also verified in the same manner. It can be carried out. That is, a sufficient effect can be expected also when verifying whether there is an inappropriate user dictionary 33 in the output sentence. Further, it is possible to verify whether or not there is an appropriate specialized dictionary 32 and whether to use it for translation in the same manner.

Further, while the translated word having the source from the user dictionary 33 is highlighted, it is displayed whether or not the same headword is in another dictionary, and the desired translated word is included in it. It can also be applied to user interfaces such as easy replacement.

In the above embodiment, the blinking display is performed as the highlighted display, but it is sufficient if it can be distinguished from other words and phrases, and it may be reversed display, for example. Further, in the above-mentioned embodiment, only the translated word is highlighted, but the original sentence or the corresponding headword or translated word may be individually highlighted, or they may be highlighted simultaneously.

Further, in the above-mentioned embodiment, all the translated words originating from a certain dictionary are highlighted at the same time, but it is also possible to display them sequentially from the head entry word for each entry word. You may make it display with a different highlighting method so that it can be identified for each entry word.

[0051]

As is apparent from the above description, in the machine translation apparatus of the present invention, the dictionary specified by the user is used when the translated text is edited after the translation work is performed using the machine translation apparatus. By highlighting the translated word that originates from and allowing the user to edit the translated text while referring to it, the user's post-editing work can be reduced and the quality of the translated text can be improved. .

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 shows a structure of dictionary data of a basic dictionary of this embodiment.

FIG. 3 shows a structure of dictionary data of a specialized dictionary of this embodiment.

FIG. 4 shows a structure of dictionary data of a user dictionary of this embodiment.

FIG. 5 is a flowchart showing a flow of a translation process of this embodiment.

FIG. 6 is a flowchart showing the flow of processing within the translation unit of the present embodiment.

FIG. 7 is a flowchart showing a flow of dictionary selection processing according to the present embodiment.

FIG. 8 is a flowchart showing a flow of processing for adding a source flag in the morphological analysis unit of the present embodiment.

FIG. 9 is a flowchart showing a flow of dictionary display control of the present embodiment.

FIG. 10 is a diagram showing a display state when the user dictionary display of this embodiment is selected.

FIG. 11 is a diagram showing a display state when the specialized dictionary display of this embodiment is selected.

[Explanation of symbols]

 11 display unit 12 input unit 17 translation unit 18 dictionary selection unit 19 dictionary control unit 20 dictionary control unit 20 dictionary editing unit 21 display control unit 31 basic dictionary 32 specialized dictionary 33 user dictionary 51 headword 53 translated word 55 knowledge information 61 headword 63 translated word 65 knowledge information 71 Headword 73 Translated Word 75 Knowledge Information

Claims (2)

[Claims] 1. A first means for storing an input means for inputting an original sentence in a source language, a headword, a translated word corresponding to the headword, and knowledge information such as a wording necessary for translating the headword. , A second dictionary that stores a headword that depends on a specific field, a translated word that corresponds to the headword, and knowledge information necessary when translating the headword, and an arbitrary headword , A user dictionary that stores an arbitrary translation word for the entry word and knowledge information necessary for translating the entry word, a dictionary creating unit that creates the user dictionary, the second dictionary and the user dictionary Selecting means for selecting at least one of the above, and a translation means for controlling the priority order of the second dictionary and the user dictionary based on the selection by the selecting means, and performing the translation processing using each dictionary. And the translation method Output means for displaying the translated text in the obtained target language, designating means for designating one dictionary type from each dictionary used for the translation processing, and when the dictionary type is designated by the designating means, When a headword of a source language belonging to the dictionary used in the translation process is present in the original sentence, an emphasis unit for emphasizing and outputting the original sentence or the corresponding headword or translated word is provided. Machine translation device. 2. An output control means for displaying the type of dictionary used in the translation processing on the output means as necessary, and one of the dictionaries displayed on the output means is designated. 2. The machine translation apparatus according to claim 1, wherein a translation word sourced from the dictionary designated by the designating means, a corresponding headword, or an original sentence is highlighted by the designation means.