cut something down

Từ điển Oxford Advanced Learner 8th

▪ I. ˌcut sthˈdown derived
to make sth fall down by cutting it at the base
•to cut down a tree
Main entry: ↑cut_derived
 
▪ II. ˌcut sthˈdown (to…) | ˌcut ˈdown (on sth) derived
to reduce the size, amount or number of sth
•We need to cut the article down to 1 000 words.
•The doctor told him to cut down on his drinking.
•I won't have a cigarette, thanks— I'm trying to cut down (= smoke fewer).
Main entry: ↑cut_derived