can't help doing

问题描述:

can't help doing
我想,应该是"不能帮助做某事",但是这样读不通啊.

不禁 忍不住
-Why are you crying?
-I can't help it.He is the crist!
你怎么哭起来了?
我忍不住了,他是最棒的
(《海上钢琴师》对白)