外面

In a sentence

• 外面有很多活动可以参加。

  There are many activities outside that one can participate in.

  The term 外面 (outside) indicates the physical external environment where activities occur.

• 他喜欢坐在外面的阳台上看书。

  He enjoys sitting on the outside balcony to read.

  Here, 外面 refers to the external part of the dwelling or house, specifically the balcony, relative to the indoors.

• 什么声音？外面是不是有人？

  What is that sound? Is there someone outside?

  In this sentence, 外面 is used to denote the spatial area beyond the current location, like outside the room or house.