The definition and characteristic of indoor air pollution as well as the source of major pollutants and their danger are introduced with measures for controlling indoor air pollution presented.

介绍了室内空气污染的定义、特点以及主要污染物的来源和危害，并提出了室内空气污染的控制。

youdao

We normally associate air pollution with smokestacks and cars, but volcanoes, forest fires, dust storms, marshes, oceans, and plants also add to the air chemicals we consider pollutants.

我们常常将空气污染与烟囱和汽车联系在一起，但事实上火山、森林火灾、沙暴、沼泽、海洋和植物都会带来一些我们认为是大气污染物的化学物质。

youdao

The content of air pollutants in the leaves of planting trees can reflect degrees of air pollution and ability of absorbability of planting trees for air pollutants.

植物叶片内大气污染物含量既可反映大气污染的水平又可反映植物对大气污染的修复吸滞能力。

youdao

"At a per-passenger-mile basis, rail is about three times as efficient as travel by car, in terms of fuel efficiency, and six times as efficient as travel by air, so there are pretty substantial pollution reduction benefits both in terms of greenhouse gases and other pollutants."

VOA: standard.2010.02.15