sag off
phrasal verbsag off | sag off something
- (Northern British English, informal) to stay away from school or work when you should be there, or leave before you should
逃学；旷课；旷工；早退 - We sagged off school and wrote the song.
我们逃学写了那首歌。 - She sagged off from a double maths lesson.
她上完双数学课后就精神萎靡了。
- We sagged off school and wrote the song.