catch on片语动词KK [kætʃ ɑn] /kætʃ ɑn/发音片语动词1流行、受欢迎、风行The new payment app caught on quickly among younger users.这款新的支付应用程式很快在年轻用户中流行起来。2明白、领悟、听懂口语He didn't catch on until someone explained the joke to him.直到有人跟他解释那个笑话,他才明白过来。3察觉、发觉常与 to 连用It took her months to catch on to what he was really doing.她花了好几个月才察觉他实际上在做什么。用这个字练口说→