我们需要净化社会风气，并为人类创造更好的环境。
We need to clean the social climate for a better humane environment.
最后，树木对于净化空气也做出了很大的贡献，使得我们的环境更清新。
Finally, trees have a great contribution in purifying air and make our environment be fresher.
这些便是我们平时饮食过程中会留下的‘痕迹’，也就是那些净化环境的塑料购物袋和白色垃圾。
These are marks and traces we normally will leave when we eat-plastic waste that pollutes the environment.
虽然我个人的“力量”很弱小，但是我可以号召所有的同学们一起和破坏环境的人做“斗争”，来净化我们的家园。
"Although I personally" power "is very weak, but I can call all the classmates do" struggle "and damage the environment, to clean up our home."
这样一来，我们的社会环境将得到净化，诚信终将占据上风。
In this way, our society will become purified and credibility will ultimately prevail.
这样一来，我们的社会环境将得到净化，诚信终将占据上风。
In this way, our society will become purified and credibility will ultimately prevail.
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