Be in the air 将要发生的事情

The feeling or idea that something new is about to happen or is going to change

Example: From the arguments going on at the meeting, it seems that a change in policy is in the air.

Clear the air 消除误会

To settle a dispute and restore good relations

Example: We had a meeting with the workers, and I think we’ve cleared the air now.

Cost an arm and a leg 极其昂贵

To be very expensive

Example: I love that fur coat. However, I don’t think I’m going to buy it because it costs an arm and a leg.

A bad egg 缺乏道德的人

Somebody who has no moral principles and should be avoided

Example: You mustn’t lend Tim money, he’s a bad egg. You’ll never see him or your money again!

In the Bag 稳操胜券

Said of an achievement which is secure

Example: We have the deal in the bag. The client came in this morning to sign the agreement.

In the balance 未知的,不可预测的

Said when the outcome of a situation is unknown or unpredictable

Example: His career as a pilot is in the balance, as his eyesight does not seem good enough.

Drive a hard bargain 极力讨价还价

To have the negotiating strength and skills to get the most advantageous price and conditions

Example: Amanda is negotiating the best price from the suppliers. She drives a hard bargain.

Ring a bell 看上去或听起来非常熟悉

To look, sound or seem familiar

Example: That face rings a bell, where have I seen him before?

Tighten one’s belt 节衣缩食

To cut down on spending because there is less income than before

Example: Now you are out of work, you’ll have to tighten your belt and give up buying new clothes and going out so often.