catch on
柯林斯词典
1. PHRASAL VERB If you catch on to something, you understand it, or realize that it is happening. 懂得; 领悟
He got what he could out of me before I caught on to the kind of person he'd turned into. 他尽其所能从我处得到一切后,我才明白他已蜕变成什么样的人。
2. PHRASAL VERB If something catches on, it becomes popular. 流行
The idea has been around for ages without catching on. 这个观点由来已久,但一直未风行。
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