1. A communication support apparatus comprising: a processing system comprising at least one processor; and a memory comprising one or more tangible computer-readable media containing instructions for execution by the processing system, wherein the instructions, when executed by the processing system, programmatically define: a speech recognizer that recognizes a first speech of a source language as a first source language sentence, and recognizes a second speech of the source language following the first speech as a second source language sentence; a determining unit that determines whether the second source language sentence is similar to the first source language sentence; and a language converter that translates the first source language sentence into a first translation sentence, and translates the second source language sentence into a second translation sentence different from the first translation sentence when the determining unit determines that the second language sentence is similar to the first source language sentence.
1. A communication support apparatus comprising: a processing system comprising at least one processor; and a memory comprising one or more tangible computer-readable media containing instructions for execution by the processing system, wherein the instructions, when executed by the processing system, programmatically define: a speech recognizer that recognizes a first speech of a source language as a first source language sentence, and recognizes a second speech of the source language following the first speech as a second source language sentence; a determining unit that determines whether the second source language sentence is similar to the first source language sentence; and a language converter that translates the first source language sentence into a first translation sentence, and translates the second source language sentence into a second translation sentence different from the first translation sentence when the determining unit determines that the second language sentence is similar to the first source language sentence. 2. The communication support apparatus according to claim 1 , further comprising a translation data storage that stores a source language sentence and at least one translation candidate sentence which is a target language sentence having the same meaning as the source language sentence, the source language sentence and the translation candidate sentence being associated with each other, wherein when the determining unit determines that the second source language sentence is similar to the first source language sentence, the language converter searches the translation data storage for at least one translation candidate sentence with the first source language sentence and the second source language sentence being each a search key, selects a first translation candidate sentence from the at least one translation candidate sentence as the first translation sentence, and selects a second translation candidate sentence different from the first translation candidate sentence from the at least one translation candidate sentence as the second translation sentence.