coin flip
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释义
不确定的选择
An uncertain selection (between two objects of very similar quality).
例句
Raj: I keep telling you, if I wasn't an astrophysicist, I would have been a party planner. It was always a coin flip. (The Big Band Theory)
拉什：我一直在说，如果我不是天文学家，早就是派对策划人了。这都是不确定的选择。（生活大爆炸）
