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play dumb 装傻，装聋作哑
dumb 哑的，不可以说话的，笨的
Don't play dumb with me, I know you ate the last piece of cake.
别装傻了，我了解是你吃了最后一块蛋糕。
He says he doesn't know it at all, but I know he's just playing dumb.
他说他完全不了解这件事，我了解他只不过在装聋作哑。
疯狂训练吧！
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