It is known that pollution is a long-term problem, and no single government can meet the challenge alone.

众所周知，污染是一个长期问题，没有任何一个政府能够单独应对这个挑战。

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In Maryland, a single green street to reduce flooding and pollution is estimated to create or preserve 50 jobs.

在马里兰州，一个环保街道减少水泛滥和水污染的项目，预计至少创造50个工作机会。

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Through recovering resources to treat pollution, it transforms the utilization of straw from single cellulose paper making into comprehensive use of cellulose, lignin, glycans and other resources.

用回收资源来治理污染，将秸秆的利用从单一的纤维素造纸，改造为综合利用纤维素、木质素和聚糖类等资源的联产技术。

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But should he proceed with regulations to control pollution from existing coal-fired power plants, the single largest source of carbon pollution, those regulations probably will contribute to shuttering facilities already struggling to compete with cheap natural gas.

NPR: PROMISES, PROMISES: Climate Change

And it's often forgotten because this is an executive action that he did in concert with major automobile companies, but taken by itself this single action did more to reduce carbon pollution than any other action that has been taken, in our view.

WHITEHOUSE: Press Briefing

The Pentagon's ultimate goal of creating a single network of sensors may also benefit state and local programs designed to monitor air pollution, noxious fumes and municipal water supplies, the report stated.

CNN: DOD deploying hazard-detection network