11. A translation supporting method for supporting a process of a computer translating an original sentence, the translation supporting method comprising: setting a first character string contained in the original sentence in a first language as a first original sentence partial expression; setting, as a first original sentence dummy head in the first language, a second character string that is in the first language, that is shorter than the first original sentence partial expression, and that semantically or syntactically represents the first original sentence partial expression; generating a first original skeleton sentence by replacing the first original sentence partial expression in the original sentence with the first original sentence dummy head; obtaining a first translated skeleton sentence which is a translation of the first original skeleton sentence translated from the first language into a second language; obtaining a first translated partial expression which is a translation of the first original sentence partial expression translated from the first language into the second language; generating a translation in the second language of the original sentence by replacing a first translation dummy head which is a translation in the second language of the first original sentence dummy head and which is contained in the first translated skeleton sentence with the first translated partial expression; outputting the generated translation in the second language of the original sentence to a translated sentence storage unit; and controlling an output device to enable the original sentence partial expression to be output to a first window different from a second window in which the original sentence is displayed.
11. A translation supporting method for supporting a process of a computer translating an original sentence, the translation supporting method comprising: setting a first character string contained in the original sentence in a first language as a first original sentence partial expression; setting, as a first original sentence dummy head in the first language, a second character string that is in the first language, that is shorter than the first original sentence partial expression, and that semantically or syntactically represents the first original sentence partial expression; generating a first original skeleton sentence by replacing the first original sentence partial expression in the original sentence with the first original sentence dummy head; obtaining a first translated skeleton sentence which is a translation of the first original skeleton sentence translated from the first language into a second language; obtaining a first translated partial expression which is a translation of the first original sentence partial expression translated from the first language into the second language; generating a translation in the second language of the original sentence by replacing a first translation dummy head which is a translation in the second language of the first original sentence dummy head and which is contained in the first translated skeleton sentence with the first translated partial expression; outputting the generated translation in the second language of the original sentence to a translated sentence storage unit; and controlling an output device to enable the original sentence partial expression to be output to a first window different from a second window in which the original sentence is displayed. 13. The translation supporting method according to claim 11 , further comprising assigning an identifier for identification to each of the first original sentence partial expression, the first original sentence dummy head, the first translated partial expression, and the first translated sentence dummy head; and associating the first original sentence partial expression, the first original sentence dummy head, the first translated partial expression, and the first translated sentence dummy head with one another using the identifier, wherein replacement of the first original sentence partial expression with the first original sentence dummy head and replacement of the first translation dummy head with the first translated partial expression are performed based on the identifier.