I don't like the two-faced person.

我不喜欢两面派的人。

　　形容词two-faced一般指当面一套、背地又一套的行为伎俩，绝对是个贬义词。有首英文歌《Shape of My Heart》的歌词说“I'm not a man with too many faces. The mask I wear is one”就是说，我不是一个有很多面孔的人，我是个真诚的人。

例句：He's a two-faced person. He knows how to butter up those power.
　　他是个两面三刀的人，他懂得怎么向领导阿谀谄媚。