The precise sources of the PCB plume should be pinned down and used to complete the pollutant inventories of African countries, she says.(她说，这些氯联苯的污染源必须被清除掉，以完善非洲国家污染物清单。)
Carmakers have challenged the law, in part on the ground that CO2 was not an air pollutant-a notion the Supreme Court has now comprehensively quashed.(汽车制造商对该法律提出质疑，部分根据是二氧化碳不属空气污染物——最高法院这一次完全否定了这种说法。)
Carmakers have challenged the law, in part on the ground that CO2 was not an air pollutant-a notion the Supreme Court has now quashed.(汽车制造商曾挑战这项法律，大部分是以CO2不是空气污染物质为理由，但是现在最高法院现在已经全面否定了这种概念。)
You know, artificial boards are a source of the pollutant formaldehyde.(你知道，人造板材是污染物甲醛的来源之一。)
The hope is that the gas will stay deep underground for millennia rather than entering the atmosphere as a heat-trapping pollutant.(我们宁愿二氧化碳在地下沉睡一千年，也不愿把它释放到大气中来使大气变暖。)
The environmental quality standards and pollutant discharge or emission standards are divided into state standards and local standards.(环境质量标准、污染物排放标准分为国家标准和地方标准。)
Soon electrofilters of the new generation will be installed here and that will greatly lower the pollutant emissions.(新一代的电子除尘过滤装置很快将会被安装起来，这样会很大程度上降低污染物的排放。)
PM affects more people than any other pollutant.(可吸入颗粒物对人的影响要大于其他任何污染物。)
As an air pollutant, NO2 has several correlated activities.(作为一种空气污染物，二氧化氮具有几个相关联的活动。)
Still, there are many reasons to pursue such studies, he said. Electric fields can help reduce soot formation and pollutant emissions from flames.(仍有许多原因推动这些研究，他说。电场可助于降低火焰中烟尘的形成以及污染物的排放。)
