1. 得到的不是永恒的拥有，失去的将永不会再来，保护环境人人有责。

1. What you obtain is not eternal possession, and what you lose will never return. Protecting the environment is the responsibility of everyone.

2. 环境保护，功在当代，利在千秋；节能降耗，减污增效，利国利民。

2. Environmental protection benefits the present generation and contributes to the prosperity of future generations; energy conservation and reduction of consumption, as well as pollution reduction and efficiency improvement, are beneficial to the country and the people.

3. 保护环境，少说多做，让校园成为绿色的殿堂。

3. Protect the environment, talk less and do more, and let the campus become a green sanctuary.

4. 人类只有一个可生息的村庄——地球，保护环境是每个地球村民的责任。

4. Humanity has only one habitable village — Earth, and protecting the environment is the responsibility of every inhabitant of this planet.

5. 保护海洋环境，禁止向海洋倾倒有毒有害废弃物。

5. Protect the marine environment and prohibit the dumping of toxic and hazardous waste into the ocean.

6. 追求环保是你我的心愿，参与环保是你我的责任。

6. Striving for environmental protection is our shared aspiration, and participating in environmental protection is our collective responsibility.

7. 人人讲安全，事事为安全;时时想安全，处处要安全。你们想了解安全环保标语吗?

7. Safety is everyone's concern, and safety is in everything; always think of safety, and always demand safety. Do you want to know some safety and environmental protection slogans?

8. 保护环境，要你十分留心，十分细心，十分有心。

8. To protect the environment, it requires your utmost care, utmost attentiveness, and utmost intentionality.

9. 让我们来保护花草树木吧！看，花草树木在向你挥出希望的小手。

9. Let us protect the flowers, grass, and trees! Look, the flowers and trees are waving little hands of hope at you.

10. 喝洁净的水，呼吸新鲜的空气，这需要您每时每刻爱护环境。

10. Drinking clean water and breathing fresh air requires you to cherish the environment every moment.

11. 人类只有一个可生息的村庄——地球，保护环境是每个地球村民。

11. There is only one habitable village for humanity—Earth, and protecting the environment is the responsibility of every inhabitant of Earth.

12. 幸福生活不只在于丰衣足食，也在于碧水蓝天。

12. A happy life is not only about abundance in food and clothing, but also about clear waters and blue skies.

13. 门前院后种棵树，室内阳台养盆花，健康幸福到你家。

13. Plant a tree in front of the door and a pot of flowers on the indoor balcony, health and happiness come to your home.

14. 拯救地球刻不容缓，保护环境迫在眉睫，共建家园任重道远。

14. It is urgent to save the Earth, to protect the environment is imminent, and to jointly build our home is a long and arduous journey.

15. 如果没有花草树木，我们还能吸收氧气吗？让我们保护花草树木吧！

15. Can we still absorb oxygen without flowers, grass, and trees? Let's protect flowers, grass, and trees!

16. 土壤不能再生，防止土壤污染和沙化，减少水土流失。

16. The soil cannot be再生 (regenerated), so it is necessary to prevent soil pollution and desertification, and reduce soil erosion.

17. 多一声谢谢，多一个朋友，多一声抱歉，多一份宽容。

17. More "thank you" brings more friends, more "sorry" brings more tolerance.