what the hell is going on here?和what the hell is going on out here?为什么有的多了个out?

问题描述:

what the hell is going on here?和what the hell is going on out here?为什么有的多了个out?

两个句子一个样的.out在这里没有意义,这是out的一个用法.类似的还有of=out of