crack-up

n. (飞机等)撞碎, (身体的)衰退, (精神的)崩溃, 破坏

例句与用法：

Suddenly, without warning the plane seemed to crack up as it was about to take off.

飞机将要起飞时，突然，没有得到任何警告，就好像要撞裂了。

Cyril is going to crack up If he doesn't stop working so hard.

如果西里尔继续这样拼命工作，他会垮下来的。

You'll crack up if you go on working so hard.

你继续这样拚命干下去，身体会吃不消的。

He was simply not the genius he was cracked up to be.

他不象人们所赞扬的那样是个天才

详细释义：

=crackup