Carbon dioxide emissions and other pollutants emissions decline in different degrees, and the effect of energy conservation and emission reduction is obvious.

环境改善、能源需求层面：二氧化碳等污染物排放均有不同程度的降低，碳关税节能减排效果明显。

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In order to execute the standard, this paper introduces the corresponding research on developing the measurement system of vehicle's fuel evaporative pollutants emissions.

为了积极配合这一标准的执行，本文介绍了研制汽车燃油蒸发污染物排放测试系统的相关研究工作。

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The need for more energy to power larger cities and economic growth therein leads to the construction of dams, the consequent flooding of ecosystems, and increased emissions of pollutants.

人们需要更多的能源支持更大的城市运转和经济增长，从而导致了水坝的建设，随之而来的生态系统的洪水，以及污染物的排放增加。

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And that in turn leads to additional emissions of harmful pollutants and our area is very concerned about improving air quality as one of the key ways to make our communities even better places to live and work."

VOA: standard.2010.07.26

McCarthy would succeed Lisa Jackson, who was repeatedly forced to defend her EPA stance favoring tougher federal standards on toxic pollutants and mercury emissions from coal-burning power plants.

CNN: Obama's new Cabinet picks face big challenges

Air Pollution Score rates tailpipe emissions for pollutants that cause smog, on a scale of 1 to 10, with 10 being the cleanest and 1 the dirtiest.

FORBES: America's Dirtiest Vehicles 2013

Last month, the EPA unveiled a scaled-back version of regulations it proposed last year targeting emissions of pollutants from industrial boilers after being deluged with letters and comments.

WSJ: EPA Tangles With New Critic: Labor