crack up 撞坏 ; 让人大笑 ; 大笑 ; 失去控制
crack-up 撞碎 ; 崩溃
The Crack-up 崩溃 ; 崩溃自传体文集
Scrat's Continental Crack-Up 大陆漂移
crack up a boat 撞沉了一条船
T Crack up 碾核金属
crack up a plane 撞沉了一条船
Slot your foot (big toe up, pinky toe down) into the crack up to the arch of your foot, keeping your knee out to the side.
把你的脚尖（大脚趾在上，小指在下）楔入裂缝中去，直到你的足弓的部分，膝盖保持向外。
In one recent crack-up, two drivers survived with only minor injury.
在最近的一次撞车事故中，两名司机只是轻微受伤而幸存。
You're clearly having some kind of a crack-up, so I suggest you take three weeks off.
你显然有某种精神崩溃的样子，所以我建议你休假三周。
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