He is very quick to catch on to things.
他領悟能力很強。
Wait a minute! I'm beginning to catch on.
等一下！我開始有點懂了。
Eddie slipped the safety catch on his automatic back into place.
埃迪將自動步槍的保險栓重新拉上。
It's hardly surprising his ideas didn't catch on
他的想法沒有被廣泛接受，這并不足為奇。
At first I didn't catch on, then I suddenly saw the light.
始而不解，繼而恍然。