catchy 容易记住的，朗朗上口的

catchy song 口水歌

you hear a catchy song for days or even weeks, then you just can't get it out of your head.

你听完一首口水歌后，连续数日甚至数周你都没办法将其在脑海中摆脱掉。

One of the best ways to get people's attention on internet is to have a catchy title.

在网上要吸引眼球的最佳办法之一就是有一个吸引人的标题。

Papi jiang's vedios are very interesting and catchy.

papi酱的视频都很有趣很吸引人。