9. A multilingual transmission system comprising: a client device that transmits a request for desired text data and that receives the desired text data; and a server device that transmits the desired text data to the client device according to the request from the client device, the server device provided at a location separate from the client device; wherein the client device includes: a requested information transmission unit for transmitting text identification information that identifies the desired text data and requested language information that designates language of the text data; and a reception output unit that receives the desired text data from the server device and outputs the desired text data; and wherein the server device includes: a requested information reception unit that receives the text identification information and the requested language information transmitted from the client device; a pivot language memory that stores pivot language data expressed in a pivot language; a text retrieval unit that retrieves pivot language data from the pivot language memory based on the text identification information, the retrieved pivot language data having a content that is different from a content of the text identification information; a target language text generator that generates, based on the pivot language data retrieved by the text retrieval unit, target language text data in the language indicated by the requested language information, wherein the target language text data differs from a translation of the text identification information; and a text transmission unit that transmits the target language text data generated by the target language text generator to the client device as the desired text data.
9. A multilingual transmission system comprising: a client device that transmits a request for desired text data and that receives the desired text data; and a server device that transmits the desired text data to the client device according to the request from the client device, the server device provided at a location separate from the client device; wherein the client device includes: a requested information transmission unit for transmitting text identification information that identifies the desired text data and requested language information that designates language of the text data; and a reception output unit that receives the desired text data from the server device and outputs the desired text data; and wherein the server device includes: a requested information reception unit that receives the text identification information and the requested language information transmitted from the client device; a pivot language memory that stores pivot language data expressed in a pivot language; a text retrieval unit that retrieves pivot language data from the pivot language memory based on the text identification information, the retrieved pivot language data having a content that is different from a content of the text identification information; a target language text generator that generates, based on the pivot language data retrieved by the text retrieval unit, target language text data in the language indicated by the requested language information, wherein the target language text data differs from a translation of the text identification information; and a text transmission unit that transmits the target language text data generated by the target language text generator to the client device as the desired text data. 13. A multilingual transmission system an claimed in claim 9, wherein: the requested information transmission unit of the client device transmits to the server device a search request containing a key word to be searched and key language information indicating the language of the key word; the requested information reception unit of the server device receives the search request from the client device; the server device further includes: a key word conversion unit that converts the key word, based on the key language information included in the search request, into a pivot language key word expressed in the pivot language; and a pivot language search unit that searches the pivot language data stored in the pivot language memory for pivot language data including the pivot language key word; the target language text generator generates target language text data based on the pivot language data searched out by the pivot language search unit; the text transmission unit transmits the target language text data to the server device as a search result; and the reception output unit of the client device receives and outputs the search result.