It can be publicity, or the surrounding condition, a characteristic attitude, or even the invisible, odorless, and tasteless mixture of gases which surround Miang Ket Ki.

It's most commonly referred to as the part of the earth's atmosphere people breathe.

外国很流行Tumblr，一种微博，它有一个air客户端，a stuff like twitter or fb。。。。 所以what is air 类似于：what's ur qq number？ 个人意见，omegle上的不多，多多指教。