来源：互联网 2011-04-06 06:49
to set a thief to catch a thief
He is a person who bites the hand that feeds one.
To wait at ease till the enemy is exhausted.
to fight against longer odds
I think it is better for you to render/return good for evil .
to pay somebody (back) in his own coin
to turn a person's battery against himself
A bad compromise is better than a good lawsuit.
What you do is throw a straw against the wind. (run one's head against a stone wall; Whether the pitcher strikes the stone or the stone strikes the pitcher, it is bad for the pitcher.)