to act up
[phrase form: act]
01
发作, 引起不适
to cause regular discomfort or pain, often related to a physical illness or health issue
例子
His old knee injury acts up every time it rains, causing him pain.
他的旧膝伤每次下雨都会发作，给他带来痛苦。
When her back starts acting up, she has trouble with daily activities.
当她的背部开始闹情绪时，她在日常活动中会遇到困难。
02
行为不当, 捣乱
to behave in an improper manner, often disregarding rules or social norms
例子
During the class, some students tend to act up and disrupt the lesson.
在课堂上，一些学生倾向于行为不当并扰乱课程。
Children may act up when they are seeking attention from their parents.
孩子们在寻求父母的关注时可能会调皮捣蛋。
03
出毛病, 不正常工作
(of mechanical devices, technology, or equipment) to not work properly
例子
My old computer tends to act up whenever I run multiple applications.
每当我运行多个应用程序时，我的旧电脑往往会出问题。
The printer started acting up, and we could n't get it to print the documents.
打印机开始出毛病，我们无法打印文件。
04
暂代, 临时担任更高职位
to be temporarily assigned to a higher position within an organization or role
Dialect
British
British例子
Due to the manager 's illness, I had to act up as the team leader for a week.
由于经理生病，我不得不临时担任团队领导一周。
While our supervisor is on maternity leave, John will act up as the interim department head.
在我们的主管休产假期间，约翰将代理临时部门主管。
