h
catch up的意思是：趕上,追上
把…纏住
(1)
抓起(某物),突然拿起(某物)
(2)
打斷并挑剔別人的話
(3)
吸住,(被)卷入,受感染
(4)
追上,趕上
（5）
敘舊（口語）
英語句子
The less advanced strive to catch up with the more advanced.
后進(jìn)趕先進(jìn).
Please catch up the loose end of the rope
請(qǐng)抓住繩子松著的一端.
He runs so fast that no one can catch up with him.
他跑得很快沒人能趕上他
Liu Na runs so fast that nobody can catch her up.
劉娜跑的那樣快,誰也趕不上他
I'll get up at seven o'clock so that I can catch the bus.
我7點(diǎn)鐘起床才能趕上公車.