1.How to pretect our enviroment has been one of the most difficult problem in the world.
如何保护环境已经成为世界难题之一
垃圾污染环境,损害健康,不要到处扔垃圾
3.The waste water will pour into rivers,lakes and fields.It will harm the crops ,kill a large number of fish.
4.Keep the enviroment clean and tidy.We have only one earth.We should try our best to pretect it,make our home more and more beautiful
保持环境干净和整洁,我们只有一个地球,应该保护它,使我们的家园更加美丽
5.Protection of the environment is everyone's responsibility