The precise sources of the PCB plume should be pinned down and used to complete the pollutant inventories of African countries, she says.(她說(shuō)，這些氯聯(lián)苯的污染源必須被清除掉，以完善非洲國(guó)家污染物清單。)

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.(汽車(chē)制造商對(duì)該法律提出質(zhì)疑，部分根據(jù)是二氧化碳不屬空氣污染物——最高法院這一次完全否定了這種說(shuō)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.(汽車(chē)制造商曾挑戰(zhàn)這項(xiàng)法律，大部分是以CO2不是空氣污染物質(zhì)為理由，但是現(xiàn)在最高法院現(xiàn)在已經(jīng)全面否定了這種概念。)

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來(lái)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.(我們寧愿二氧化碳在地下沉睡一千年，也不愿把它釋放到大氣中來(lái)使大氣變暖。)

The environmental quality standards and pollutant discharge or emission standards are divided into state standards and local standards.(環(huán)境質(zhì)量標(biāo)準(zhǔn)、污染物排放標(biāo)準(zhǔn)分為國(guó)家標(biāo)準(zhǔn)和地方標(biāo)準(zhǔn)。)

Soon electrofilters of the new generation will be installed here and that will greatly lower the pollutant emissions.(新一代的電子除塵過(guò)濾裝置很快將會(huì)被安裝起來(lái)，這樣會(huì)很大程度上降低污染物的排放。)

PM affects more people than any other pollutant.(可吸入顆粒物對(duì)人的影響要大于其他任何污染物。)

As an air pollutant, NO2 has several correlated activities.(作為一種空氣污染物，二氧化氮具有幾個(gè)相關(guān)聯(lián)的活動(dòng)。)

Still, there are many reasons to pursue such studies, he said. Electric fields can help reduce soot formation and pollutant emissions from flames.(仍有許多原因推動(dòng)這些研究，他說(shuō)。電場(chǎng)可助于降低火焰中煙塵的形成以及污染物的排放。)