两面派 two-faced

我知道怎样对付两面派，而且一眼就能看出谁是一贯两面讨好的人。

I know how to handle two-faced people and can even tell at the first glance who are in the habit of running with the hare and hunting with the hounds.

(注：run with the hare and hunt with the hounds指人两面讨好，不得罪任何一方的做法。)