15、为了子孙后代，请留下一片净土。

For the sake of future generations, please leave a piece of pure land.

16、做地球妈妈的好孩子，保护她！

Be a good child of Mother Earth, protect her!

17、让绿色的希望从校园萌芽！

Let the green hope sprout from the campus!

18、让地球妈妈永远年轻美丽。

Let Mother Earth be young and beautiful forever.

19、为了校园更美，请勿摘花。

In order to make the campus more beautiful, please don't pick flowers.

20、保护环境就是保护我们自己。

Protecting the environment means protecting ourselves.

21、不要旁观，请加入行动者的行列。

Don't stand by. Please join the ranks of actors.

22、学校是我家，环保靠大家。

School is my home, environmental protection depends on everyone.

23、我爱花，我爱草，我爱青青小树苗。

I love flowers, I love grass, I love green saplings.

24、你来绕一绕，我来笑一笑。

Come around and I'll laugh.

25、坚持团结治水，构建和谐流域。

We should adhere to unity in water control and build a harmonious River basin.

26、让经济发展的浪潮进入绿色的河道。

Let the tide of economic development enter the green river.

27、花草是我的朋友，请多一份爱护！