fall out
phrasal verbfall out
- to become loose and drop
掉落；脱落 - His hair is falling out.
他的头发在脱落。 - My tooth fell out.
我的牙齿掉了。
- His hair is falling out.
- if soldiers fall out, they leave their lines and move away
原地解散；离开队列
fall out (with somebody)
- to have an argument with somebody so that you are no longer friendly with them
（与某人）吵翻，闹翻