13. The machine translation apparatus according to claim 12 , wherein if the plurality of translation word candidates from which a translation word is not selected by using the non-applied word of translation word's selection and the list of the compound word are still stored in the translation word candidate memory, the translation word selection means selects the translation word from the plurality of translation word candidates by using the evaluation basis.
14. The machine translation apparatus according to claim 13 , wherein the evaluation basis is one of a priority of appearance frequency of each of the words in the target language document and a priority of co-occurrence intensity of at least two of the words in the target language document.