act up

英 [ækt ʌp]

美 [ækt ʌp]

运作不正常; 出毛病; （孩子）耍脾气，捣蛋

柯林斯词典

PHRASAL VERB 运作不正常；出毛病
If somethingis acting up, it is not working properly.
1. She was messing with the coffee pot, which was acting up again.
  她正在鼓捣咖啡壶，那壶又坏了。
PHRASAL VERB （孩子）耍脾气，捣蛋
If a childis acting up, they are behaving badly.
1. I could hear Jonathan acting up downstairs.
  我能听见乔纳森在楼下撒泼。

verb

make itself felt as a recurring pain
1. My arthritis is acting up again
misbehave badly
1. The children acted up when they were not bored
Synonym:carry on

He's not going to act up to his principles.
他不会按自己的原则行事的。
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。
But you didn't act up to your principle.
但你并没有按你的原则办。
What you say means very little unless you act up to it.
你要是说而不做，你的话就没有多大意思了。
We should act up, push myself, supervision and mom and dad, do good members of society.
我们应该行动起来，督促自己，监督爸爸妈妈，做社会的好公民。
I could hear Jonathan acting up downstairs.
我能听见乔纳森在楼下撒泼。
The young herdsman briskly mounted a horse that was inclined to act up with an unaccustomed rider.
年轻的牧民轻快地跃上一匹惯于对生人使性子的马。
We'll act up to the word you say.
我们会遵照你发的命令办事。
An old injury to his right foot had begun to act up again.
他右脚上的老伤又发作了。
If you act up to your promise, we are going on cooperating with you.
如果你遵守你的诺言，我们将继续同你合作。