1. A speech translating apparatus comprising: a input unit that inputs a speech in a first language; a speech recognizing unit that recognizes the speech and generates a first text; a translating unit that translates the first text into a second language and generates a second text; a first dividing unit that divides the first text into first phrases; a second dividing unit that divides the second text into second phrases; an associating unit that associates each of the second phrases with one of the first phrases semantically equivalent to the second phrase; and an output unit that sequentially outputs the second phrase and the first phrase associated with the second phrase by the associating unit in a phrase order within the second text.