乱扔垃圾 、 保护环境 的英语怎么说

乱扔垃圾
1.throw litter about
2.drop litter
3.throw rubbish about
4.litter everywhere

不要乱扔垃圾
1.Don't litter
2.garbage here

别到处乱扔垃圾

保护环境
1.to protect the environment
2.environmental protection
3.protect the environment
4.Protection of Environment

如何保护环境
1.How to Protect the Environment

乱扔垃圾，用一个单词就可以表示：littering

保护环境：protect the environment

Don't throw rubbish everywhere.
Keep the enviroment clean.

Do not litter，protect the environment。