我們最好種植更多的樹木，保護環(huán)境，工廠使越來越多的臟水污染了河流和湖泊，i‘m sure if we take care of our environment，我們的世界將會更美麗！人們不應(yīng)該到處扔垃圾， our environment is getting worse and worse now. people throw their garbage here and there. factories make more and more dirty water that has pollute