Its occurrence in different places at approximately the same time is out unusual.

问题描述:

Its occurrence in different places at approximately the same time is out unusual.
is out unusual.百度翻译成“ 是不寻常” 的意思,但Unsual 本身就是 不寻常啊,out 在此作甚讲啊?

unuasual的意思是不寻常,那么out指之外,也就是超过了不寻常之外,out类型的用法还有out of reach,够不着;out of range,范围之外.