Break a leg，骨折？断腿？这看似凶险一则俚语实际上是指：
Used to wish someone, such as an actor, success in a performance.
预祝演出成功
一起看看例句：
[八卦天后 S05E20]
A: Well, you seem so confident today.
B: Thank you so much for this dress. I really appreciate it.
A: Of course. Break a leg.
A: 你今天看起来很自信。
B: 谢谢你的裙子，我很感激。
A: 当然，祝你好运。
[名声大噪 S02E06]
A: Come on, you"re about to open on Broadway. This should be your last concern.
B: Thanks. I got to go.
A: Break a leg, okay?
A: 你快登上百老汇的舞台了，别再瞎操心了。
B: 谢了，我得走了。
A: 祝你成功！
[唇唇欲动 S02E06]
You"ve all worked really hard and I"m very proud of you. All of you. Break a leg.
你们都很努力，我为你们骄傲。为你们所有人骄傲。演出成功。
小节：Break a Leg, 预祝表演成功。与Gook Luck意思相近，但语境仅限于演出、表演等场合使用。
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