take something off something

Từ điển Oxford Advanced Learner 8th

ˌtake sth ˈoff sth derived
1. to remove an amount of money or a number of marks, points, etc. in order to reduce the total
•The manager took $10 off the bill.
•That experience took ten years off my life (= made me feel ten years older).
2. often passive to stop sth from being sold
•The slimming pills were taken off the market.
Main entry: ↑take_derived