The condition appears to result from the cumulative effect of a number of factors, with atmospheric pollutants the principal culprits.

这种情况似乎是由许多因素的累积的结果，而大气污染物是主要的罪魁祸首。

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Other atmospheric pollutants such as oxidants and sulfur oxides may produce adverse cardiovascular effects, but the evidence is limited.

其他空气污染物，如氧化剂、硫氧化物可能对心血管产生有害影响，但这方面证据不多。

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Units that discharge atmospheric pollutants in areas where the local discharge standards have been established shall observe such local standards.

凡是向已有地方排放标准的区域排放大气污染物的，应当执行地方排放标准。

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If they have shed mass, one suggestion is that it is because atmospheric pollutants, incorporated into the cylinders when they were forged, have escaped.

BBC: RELATED BBC SITES

There are other greenhouse gases, other atmospheric pollutants, the effects of cutting down forests, and more: together these things may contribute almost as much as carbon emissions to global warming.

ECONOMIST: Climate change

But apples contain high levels of an antioxidant flavonoid called quercetin which is also found abundantly in onions, tea and red wine, and may be important in protecting the lungs from the harmful effects of atmospheric pollutants and cigarette smoke.

BBC: Apples 'protect the lungs'