北师大高中英语模块4 Unit12 Lesson1: Knowing that you’ve never travelled outside of Asia, I thought I’d tell you a bit about what you can expect to find.句中outside of 是什么意思？能用outside 吗？

解释：

outside of:  prep. 在…的外面 

He insisted we stop at a small restaurant just outside of Atlanta.

他坚持让我们在亚特兰大市外不远的一家小餐馆歇歇脚。

Outside of his circle he is not very popular.

在他的圈子之外，他并不很受欢迎。

outside可以用作副词、名词、形容词或介词。作为介词，也可表示： (位置)在[向]…的外面

They stood outside the door. 他们站在门外。《简明英汉词典》

There was a boy outside the door. 门外有一个男孩。《新牛津英汉双解大词典》

根据上面所述，上句中outside of 也可换成outside.