同学们呼吁要保护环境的翻译：Students calling for the protection of the environment 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

The students called on to protect the environment

Students calling for the protection of the environment

Schoolmates appealed must protect the environment

Students who are called upon to protect the environment

Students calling for the protection of the environment