get off something

Từ điển Oxford Advanced Learner 8th

▪ I. ˌget ˈoff | ˌget ˈoff sth derived
to leave work with permission
•Could you get off (work) early tomorrow?
Main entry: ↑get_derived
 
▪ II. ˌget ˈoff sth | ˌget sb ˈoff sth derived
to stop discussing a particular subject; to make sb do this
•Please can we get off the subject of dieting?
•I couldn't get him off politics once he had started.
Main entry: ↑get_derived