act up

行动倔强, 任性
- I'm sorry my boy was acting up in your house yesterday.
  
  很抱歉, 我的儿子昨天在你家里捣乱。
(机器等)功能失常
- 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。
炫耀, 故意惹人注意
- The kid is acting up for our attention.
  
  这个孩子正在做各种动作来逗引我们注意。
(病痛等)复发
- Mother's leg seemed quite better after her operation, but recently it's been acting up again.
  
  母亲的腿在手术之后似乎好多了, 可最近又疼了起来。
做出适当反应
- 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。

网络词典

英 ækt ʌp 美 ækt ʌp

动词短语中文翻译：Unknown

同义词： ['be outrageous', 'be reckless', 'be defiant']

1. She acted up at the party by making a fool of herself.

她在聚会上表现得过于夸张，让自己尴尬。
2. The child acted up when he was scolded for breaking the rules.

当孩子因为违反规则被责骂时，他表现得非常不听话。
3. The driver acted up when he saw the policeman approaching.

司机在看到警察接近时表现得非常鲁莽。