外部的

outside(noun)

of, on, or near the outer part of anything

在室外

outside(noun)

out of, not in a building etc

外界的

outside(noun)

not part of (a group, one's work etc)

在...外

outside(noun)

on the outer part or side of; not inside or within

外观上

outside(noun)

on the outside

外面

outside(noun)

the outer surface

（指机会等）非常小的

outside(noun)

(of a chance etc) very small.