Method and device for obtaining corpus, method and system for generating translation model and method and system for mechanical translation

The invention provides a method and device for obtaining corpus, a method and system for generating a translation model and a method and system for mechanical translation. The system for the mechanical translation comprises a classification module and a translation module. The classification module is used for utilizing a first classification module to classify texts to be translated to determine the fields where the texts to be translated belong to, and the first classification model is obtained by training corpus in various fields. The translation module is used for utilizing field translation models corresponding to the fields where the texts to be translated belong to translate the texts to be translated, wherein the field translation models are obtained by training the corpus of the corresponding fields. Through the way, translation accuracy can be improved effectively.