n.(飞机等的)撞碎;(身体的)衰退;(精神的)崩溃;破坏;
例句:
I hunched that Rolls-Royce company would crack up.
我预感到罗尔斯—罗伊斯汽车制造公司要破产.
If he doesn't rest he'll crack up soon.
要是他不休息,他身体很快会垮掉的.
I'm bound to crack up soon, Bryan.
我一定是快要垮掉了, 布莱恩.