The air was full of city gas,now my world except the smell of grass also
问题描述：
The air was full of city gas,now my world except the smell of grass also
答
空气中充满了城市中的废气,现在我的世界盼望闻到青草的味道.
city gas 城市气体,其实城市中排出的各种气体也就是各种污染废气