Air particulate matter pollution has become one of the most protruding problems.

颗粒物已成为环境空气污染最突出的问题之一。

youdao

Results For each health outcome from morbidity to mortality changes, the relative risks were estimated when the concentration of air particulate matter increased some certain units.

结果建立了从发病到死亡各个健康效应终点上，大气颗粒物浓度每升高一定单位，人群不良健康效应发生的相对危险度。

youdao

The Clean Air Act mandates the EPA to regulate harmful pollutants such as particulate matter and ozone.

《清洁空气法》授权美国环保局监管有害污染物，如微粒物质和臭氧。

youdao

WMO scientists assess and monitor air pollutants such as ground-level ozone,smog, particulate matter, sulfur dioxide and carbon monoxide.

VOA: standard.2009.03.23

This will allow truckers to reduce emissions significantly (diesel emissions include nitrous oxides, particulate matter, and other air toxics and they are a major source of pollution in some areas).

FORBES: Acceleration of the Natural Gas Highway

The new study looked at how much metal this so-called particulate matter is contained in the air of underground train systems.

BBC: Railway tracks

Consider, for example, a spate of new studies that have found a rather convincing correlation between the presence of small particulate matter (PM2.5, the fine particles blown into the air by road traffic, coal-fired power plants, industrial manufacturing, and residential wood fuel combustion) and both obesity and diabetes.

FORBES: Two New Reasons to Worry about Air Pollution: Obesity and Diabetes