1.Peeping Tom 偷看者(特指喜欢偷看裸体女人的好色之徒)
When you are at home alone, be careful of Peeping Tom.
当你自己一个人在家时，要小心偷看者。
2.be on guard 戒备着
Be on guard against those who are jealous of your success.
要提防那些嫉妒你的成功的人。
3.need-to-know basis 必要的时候
I only help him on a need-to-know basis.
我只在必要的时候帮助他。
4.be out to get you 想抓你
Be careful: he's out to get you.
小心,他想抓你。
5. rest assured 放心
Please rest assured that repayment is ensured.
请您放心，还款是有保障的。
6.breathe a word 说出(讲出)
Don't breathe a word of this.
不要走漏这个消息。
