71、护我环境，为我中华！

Protect my environment, for me!

72、绿水青山是我家，大家不要破坏他。

Beautiful scenery is my home, you don't destroy him.

73、足下轻轻，手下留情。

Your hand gently.

74、举手之劳，美化校园。

No, to beautify the campus.

75、人类善待自然，就是善待自己。

Human nature is to treat themselves.

76、购买尾气排放达标的汽车。

Buy exhaust emission standards.

77、请走阳光大道，别踩小花小草！

Please take the sunshine Avenue, do not step on the grass!

78、生命只有一次地球只有一个。

There is only one life.

79、人人为环保，环保为人人。

Everyone for environmental protection, environmental protection for everyone.