Question

英语翻译请把这篇文章翻译成英文,现在我们的世界面临着很大的危机,首先就是我们对空气的污染,其实我认为造成空气污染的原因很

Answer 1

now the earth faces a unparalleled crisis. first of all, it's the pollution we did to the air. there are many ways to pollute the air,the most of them are the far big number of automobiles,and