· pull someone's leg开某人的玩笑

Never ever pull his leg. He is a man without a sense of humor. He takes everything seriously.

· keep someone at arm's length与某人保持距离

My boss is my uncle. In order to avoid unnecessary misunderstanding, I'd better keep him at arm's length in company.

· let someone down使某人失望

Joe really let me down by having broken his promises for several times.

· can't for the life of one怎么……也不行

I thought I could recite my speech backwards, but when I stood in front of the audience, I couldn't for the life of me remember what to say.

· air one's linen in public家丑外扬

The wife was often beaten by her husband, but she never told others. She didn't want to air her linen in public.

· shoot from the hip信口开河

Don't take Jay's words to heart. He shouldn't have shot from the hip.

· by hook or by crook千方百计得，不择手段得

He rose to that position by hook or by crook.

· blow hot and cold出尔反尔，喜怒无常

Do you think he'll support you? He is the type who blows hot and cold.

· make it hot for...刁难某人

Out section manager is a woman. Our general manager always looks down upon her and makes everything hot for her.