（病痛等）复发; 炫耀; 行动倔强; （机器等）功能失常
调皮；运作不正常；出毛病
The young herdsman briskly mounted a horse that was inclined to act up with an unaccustomed rider.───年轻牧民轻快地跃上一匹惯于对生人使性子的马.
Watch Ricky. He sometimes likes to act up in class.───听着，”他跟卡丝说，“你再胡闹就出去。”
We need to act up and stand for what we believe in.───我们需要做出反应,坚持我们所秉信的.
The children always act up when their mother is out.───母亲不在家,孩子们总是调皮捣蛋.
The question was so unexpected that , for a moment , she was at a loss how to act up properly.───问题来得这么突然, 她一时不知道如何作出恰当的反应.
Jack always used to act up when his mother wouldn't let him watch TV.───以前Jack的妈妈不让他看电视的时候,他就捣蛋.
Watch Ricky, he sometimes likes to act up in class.───注意里基, 他总是喜欢在课堂上捣蛋.
Watch Ricky. He sometimes likes to act up in class.───注意里基,他有时喜欢在课堂上捣乱.
The car's engine began to act up.───汽车的发动机开始出毛病了.
He like to act up and pretend that he is special.───他喜欢捣蛋胡闹,假装自己很特别.
We should act up to those principles and examples.───我们应遵循一些原则和实例.
Little children always act up with their parents at home.───小孩子们总在家里和父母耍脾气.
The children always act up at home in holidays.───假期里,小孩经常在家顽皮.
I hat it when you act up.───你捣蛋的时候真令人讨厌.
Sometimes they act up and force you to take a stand.───有时他们行动起来并让你陪伴他们的左右.
If the pressure is too low, the heating system will act up.───如果压力太低, 供暖系统就会出毛病.
acts up───调皮；运作不正常；出毛病
act upon───对…起作用；按照…行事
acted up───调皮；运作不正常；出毛病
act out───把…表演出来；把…付诸行动
cast up───呕吐；加在一起
tart up───增加香味；打扮
wait up───不睡而等候；；[口语](停下来)等…赶上；走慢点，等一等
act on───对…起作用；按照…行事
acting up───调皮；运作不正常；出毛病