Build a model city of environmental protection to create a better and happy life.

39、请让我们的校园永远充满绿色。

Please make our campus green forever.

40、保护地球等于保护自己。

Protecting the earth is equal to protecting oneself.

41、水清自然甜，水浑人人厌。

Clear water is naturally sweet, muddy water is everybody's weariness.

42、少一串脚印，多一份绿意。

Less footprints, more green.

43、节能做的好，朝朝无烦恼。

Do well in saving energy and have no trouble in the future.

44、你的行动代表花的未来。

Your actions represent the future of flowers.

45、追求绿色时尚，走向绿色文明。

Pursuing green fashion and moving towards green civilization.

46、善待地球就是善待自己。

To be kind to the earth is to be kind to oneself.

47、请别乱坎树林，让空气更加清新。

Please don't disturb the woods and make the air cleaner.

48、请让我们的腰杆永远挺直！

Please keep our waist straight forever!

49、学校是我家，绿化靠大家。

School is my home, greening depends on everyone.

50、人类善待自然就是善待自己。

Man's kindness to nature is his kindness to himself.