环保广告的英文表达可以有多种方式，以下是一些常见的例子：

保护地球环境 - 人类共有的家园。

Protect the earth's environment -- the homeland of all mankind.

保护环境是每个公民的责任与义务。

Protecting the environment is the responsibility and duty of every citizen.

减少浪费，回收利用。

Reduce wastes and recycle them instead, put them with plants and they will be fed.

保护地球，拯救未来。

Protect the environment to save our earth.

节约用水，珍惜每一滴。

Save water!

节约用纸，保护森林。

Economize paper!

随手关灯，节约能源。

Turn off the light conveniently!

不摘花草，保护自然环境。

I do not pluck flowers!

爱护桌椅，珍惜资源。

Treasure the tables and chairs!

低碳生活，人人参与。

Low-carbon, everyone together participate in.

低碳行动，给地球降温。

Low-carbon action, give a high fever of the planet cool.

爱低碳，爱地球。

Love low-carbon, love the earth.

低碳生活，让我们的地球不再低垂。

Low-carbon life makes our earth no longer lowly.

学生环保广告文案

Are you ready to make a difference？ Reuse, recycle: Let's recycle materials such as paper and glass. Every time you leave a room, save habits such as taking shorter showers, fixing leaky faucets. They help absorb carbon dioxide and release oxygen, benefiting trees. Together, advocate for friendly habits and change. It's our home.

这些广告语简洁明了，传达了环保的重要性和具体行动指南，适合用于各种环保宣传场合。