Today pollution has become a more serious problem to us. The air, the water and the land are polluted by waste or poisonous things. It does harm to human beings, animals and plants.
今天污染已经变成一个非常严重的问题。空气、水和土壤都被废弃的或有毒的东西所污染。它对人类、动物和植物都有害。

We can not have fresh air because many factories have sent poisonous smoke into the air. Beautiful parks are made dirty by plastic tins and bags. Fish die from polluted water. Strange diseases have appeared in some places because of pollution.
由于许多工厂向空气中排放有毒气体，我们现在不能呼吸新鲜空气。漂亮的公园被废弃的塑料瓶子和垃圾袋所污染。鱼死于被污染的水。由于污染，一些地方出现了奇怪的疾病。

I hope scientists can find ways to solve the serious problems. We are looking forward to seeing clear sky, clean rivers and beautiful parks again.
我希望科学家能找到解决这些问题的方法。我们期盼能重新见到蓝蓝的天，清澈的小河和美丽的公园。

词义解析：

1.pollution：污染
2.serious：扬中的
3.poisonous：有毒的
4.harm：有害
5.plastic：塑料
6.strange：奇怪的
7.disease：疾病
8.scientist：科学家

词组解析：

1.do harm to：对……有害
2.look forward to：期盼