用英文翻译几个句子

1.如何保护环境已成为世界最大难题之一.
How to pretect the environment has became one of the world's most difficuit problems.

2.垃圾污染环境,损害健康,不要到处乱扔垃圾.
Garbage pollutes environment and impair the health of human. Please don't leave about the garbage.

3.废水流到河里,湖里和田地里,污染作物,杀死大量的鱼
Waste water flow into the rivers,lakes and fields,killing a lot of fishes.

4.保护环境干净和整洁.我们只有一个地球,应保护她,使我们的家园更加美丽.
We should keep the neatness of the environment. We should protect our only earth and make our home more beautiful.

1.如何保护环境已成为世界最大难题之一.
How to pretect the environment has been one of the world's greatest problems.

2.垃圾污染环境,损害健康,不要到处乱扔垃圾.
Rubbish pollutes environment and do harm to our health. No littering about.

3.废水流到河里,湖里和田地里,污染作物,杀死大量的鱼
Waste water flows into the rivers,lakes and fields,it also pollutes the crops and kills a lot of fish.

4.保护环境干净和整洁.我们只有一个地球,应保护她,使我们的家园更加美丽.
Keep our en