看外面是look at out还是look out还是look out at

look out at .... 向外看...
look out of .... 从....向外看
look out! 当心!

因此,答案是look out at...

look out of sth. at sth.
look out是当心的意思！
look at out没有这个！

look out 是"当心,注意,小心"的意思
看窗户的外面是"look outside the window"

look out
看出窗外就是look out of the window

look out才对

Look out