PROBLEM TO BE SOLVED: To perform smooth and sufficient communication between users with each other even when the performance of a voice recognition processing is not so high. SOLUTION: A history information storage part 15 successively stores the sentences of corrected results outputted by a sentence generation part 12 and generates history information. The history information storage part 15 generates a summary from the history information, performs the sequencing or selection of translation results for which a plurality of translation results and the summary are consistent and supplies such sequenced or selected translation results and the summary to a result gathering and presenting part 16. The result gathering and presenting part 16 displays the summary of the contents translated until then together with the translation results and presents the result to the user.
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