switcheroo
noun [usually singular] (especially North American English, informal)an act of exchanging something or changing it completely so that it is the opposite of what it was before, especially in an unexpected way 一种交换或完全更改它的行为，使其与以前相反，特别是以一种意外的方式 Meanwhile, her accomplice pulls a switcheroo, replacing the diamonds with paste-and-glass. 与此同时，她的同伙拉了一把弹簧刀，用浆糊和玻璃代替了钻石。