break a leg
原文解釋: something that you say to wish someone good luck,
especially before they perform in the theatre
要上台前朋友與家人也會對你說Break a leg！就是要你別緊張，祝演出成功的意思。
1. All you have to do now is to relax yourself. You will be fine. Break a leg!
2. Tonight's the first night of the play.' 'Is it? Well, break a leg!
3. “Break a leg!” shouted the stage manager to the heroine.
4. Let's all go and do our best. Break a leg!