in outside 还是at outside

in outside 释义：

在外面

例句：

Birds in outside cages develop immunity to airborne bacteria.

养在户外笼子里的鸟对空气传播的病毒有免疫力。

at outside释义：

在外面

例句：

Xiao: Hey, guys, what's everyone looking at outside?

啸：嗨，伙计们，大家都在外面看什么呢？