41、树木正在为净化空气而加班加点，请勿让绿色工厂倒闭。

Trees are working overtime for purify air， do not let the green factory closures。

42、幸福生活不只在于丰衣足食，也在于碧水蓝天。

Is happy life not only have ample food and clothing， also lies in the clear water， blue sky。

43、地球能满足人类的需要、但满足不了人类的贪婪。

The earth can satisfy the need of human beings， but can't satisfy the human greed。

44、建设项目必须依法进行环境影响评价。

Must be conducted in accordance with the environmental impact assessment for construction projects。

45、让水更清，让天更蓝，让花更艳，让我们的地球更美丽。

Make water is more clear， day more blue， let more colourful flowers， make our earth more beautiful。

46、合理利用资源，保护生态平衡，促进经济持续发展。

Reasonable use of resources， protect the ecological balance， promoting sustainable economic development。