catch on
抓住,挂在…上;理解,受歡迎,流行開來
catch on
v 1: understand, usually after some initial difficulty; "She
didn't know what her classmates were plotting but
finally caught on" [syn: get wise, get onto, tumble,
latch on, cotton on, twig, get it]
2: become popular; "This fashion caught on in paris"