ph.
1. The girl kept catching on to her mother's skirt.
小女孩一直紧紧地拉着妈妈的裙子。
2. I don't quite catch on to what she is saying.
我不太明白她在说些什么。
3. It is a nice song and I think it will catch on quickly.
这首歌很好，我想它会很快流行起来。
1. 理解,明白：catch fire / / 着火 | catch on / / 理解,明白 | catch one's breath / / 屏息,歇口气
2. 理解,明白,变得流行：catch fire 着火,烧着 | catch on 理解,明白,变得流行 | catch one's breath 喘息;屏息
3. 理解,懂得;流行起来：catch at 试图抓住,拼命抓 | catch on 理解,懂得;流行起来 | check in (在旅馆、机场等)登记,报到
4. 了解：保护protect; safeguard; preserve; shelter | 了解understand; comprehend; catch the meaning of; catch on | 汇露reveal; make known; disclose
1. 明白;认识到
If you catch on to something, you understand it, or realize that it is happening.
e.g. He got what he could out of me before I caught on to the kind of person he'd turned into...
我还没有意识到他已经变成了那样的人，他就已经从我这儿把能套走的都套走了。
e.g. Wait a minute! I'm beginning to catch on.
等一下！我开始有点懂了。
2. 时兴;流行
If something catches on, it becomes popular.
e.g. The idea has been around for ages without catching on.
这个观点已经提出来有年头了，可是一直没被广泛接受。