1,the rule of thumb: 最根本的原则
The rule of thumb is to be polite. 最重要的是讲礼貌。
2, break the leg: 祝表演成功，其实是反话，在表演之前说断腿，其实是祝表演成功。习惯说法。
You have a big game tonight, break the leg. 你今天有个大比赛，祝你成功。
3, all ears: 洗耳恭听
I am all ears. 我洗耳恭听
4, pull someone’s leg: 跟谁开玩笑
I am pulling your leg. 我在跟你开玩笑呢。
5, lips are sealed 守口如瓶
My lips are sealed. 我守口如瓶。
6, cost an arm and a leg 很贵，花很多钱
How did my teeth cost me an arm and a leg? 我的牙如何花掉我好多钱？
7, cry one’s heart out 哭得很厉害
He cried his heart out when the dog died. 他的宠物狗死了，他哭死了。
8, get something off one’s chest 把积郁的事情讲出来
Get it off your chest, you will feel better. 把憋的话讲出来，就好受多了。
9, head over heels 爱得发疯
He is head over heels for her. 他爱她爱得发疯。
10, pat on the back 在背上轻轻拍， 鼓励
Pat yourself on the back. 自己鼓励自己一下。
11, wash one’s hands of it 洗手不干了
I wash my hands of it. 我洗手不干了。
