英汉解释

调皮；运作不正常；出毛病

同义词

v. carry on

参考例句

1. The car's engine is beginning to act up.
汽车发动机在开始失灵。
2. Mr Ye tried to act up to his reputation.
叶先生尽量使他的行为符合他的声望。
3. Sometimes they act up or out and force you to take a stand.
有时他们会做些错事，使得你不得不结束你们的关系。

英英解释

v.
  1. misbehave badly; act in a silly or improper way
  2. make itself felt as a recurring pain

网络释义

act up
胡闹，出毛病; 发作，尤指疾病发作; 无理取闹; 行动起来;
Civic Act-Up
公民起动;
ACT-UP
AIDS Coalition to Unleash Power;
Dude wanna act on up
装模作样的人对我们不爽;
act up to
按…行事;