The idea has been around for ages without catchingon.
这个观点由来已久，但一直未风行。
《柯林斯英汉双解大词典》
2
The idea is catchingon quickly.
这个想法很快就流行起来了。
3
The internet makes information billionaires out of all of us, and the architects of our online experiences are catchingon to the need to make things creatively difficult.