英语翻译4、树能阻止风吹走沙土5、我们应该制定法律来阻止谁污染

1.Cutting down trees will do great harm to the environment
2.What bad weather it is!
3.Although he was tired,he went on with work.
4.Trees can prevent the wind from blowing away the sands.
5.Laws should be made to prevent the pollution.