play dumb 装傻，装聋作哑

　　dumb 哑的，不能说话的，笨的

　　Don't play dumb with me, I know you ate the last piece of cake.

　　别装傻了，我知道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.

　　他说他完全不知道这件事，我知道他只是在装聋作哑。

　　疯狂练习吧！