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讲解文本:
act up 胡闹,调皮,捣蛋Don't take any notice of the boy. If you scold him, he'll only start acting up.不要理那孩子, 你要是责骂他,他反倒会开始调皮捣蛋。The children have been acting up all evening.整个晚上孩子们都在调皮捣蛋。
疯狂练习吧!