act up# EnglishChat - 鸟语花香
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1 楼
act up (no object): misbehave (for people); not work properly (for
machines).
"The babysitter had a difficult time. The children acted up all
evening."
"I guess I'd better take my car to the garage. It's been acting up
lately."
machines).
"The babysitter had a difficult time. The children acted up all
evening."
"I guess I'd better take my car to the garage. It's been acting up
lately."