act up

If a child is acting up， they are behaving badly.

如果一個(gè)小孩子act up，那就是說他表現(xiàn)的很差，故意搗亂的意思。

I could hear Jonathan acting up downstairs.

我能聽見喬納森在樓下撒潑。

If you act up in class， you will be sent to the principal‘s office。

如果你在課堂上調(diào)皮搗蛋，就會(huì)被送到校長(zhǎng)辦公室.

The driver stopped the school bus because the kids were acting up.

因?yàn)楹⒆觽冋{(diào)皮搗蛋，司機(jī)把校車停了下來。