Why the Chinese translation into English,then translate into

there are always differences between two kinds of languages,not only in the aspect of linguistics,but also culture.Something has been changed from C to E,and more difference on its way back.Translator is a liar.
再问： Not too much to understand
再答： languages are complex; cultures are complex; then translation from one to another is more complex. This is a question since the cross-culture communication began, then, to understand or not is not your question.