A translation system is provided, which comprises: a translation server comprising guidelines for writing original text that serve as criteria for determining whether errors exist in the original text, an original text controller determining whether the original text conforms to the guidelines for writing original text, and a translation engine translating the original text with reference to at least one of a basic dictionary and a plurality of user dictionaries; a user interface comprising an original text processing part receiving and transmitting the original text to the translation server, a translated text processing part outputting the received translated text from the translation server and transmitting a result about whether to approve the corresponding translated text to the translation server, and a user dictionary editing part modifying contents of the user dictionary; and a user community server comprising an original text writing method shared database and a user dictionary shared database.