break a leg
祝你好运！
口语·演出前祝福好运
英文释义
to wish someone good luck, especially before a performance or event
例句
You're going to do great in the play tonight—break a leg!
典故来源
源自戏剧界迷信，直接说“好运”会带来厄运，所以用反话“摔断腿”来祝福，祈求演出成功。