catch on

Từ điển Oxford Advanced Learner 8th

▪ I. ˌcatch ˈon derived
to become popular or fashionable
•He invented a new game, but it never really caught on.
Main entry: ↑catch_derived
 
▪ II. ˌcatch ˈon (to sth) derived
(informal)to understand sth
•He is very quick to catch on to things.
Main entry: ↑catch_derived