The researchers also looked at the amount of “fine particulate air pollution” in the Middle East.

研究人员还观察了中东地区大气细颗粒物污染指数。

In parts of the capital levels of fine particulate matter reached 30 times the limit deemed safe.

在首都的某些地方，大气细颗粒物的含量达到了最低安全指标的30倍。

Fine particulate matters are so tiny that when inhaled, they go through your lungs and can enter the bloodstream.

细颗粒物非常微小，当吸入时，它们会穿过肺部进入血流。

The Obama plan would also have what is known as a co-benefit: levels of fine particulate matter would fall.

降低细颗粒物的水平。

The air inside virtually every house contains some fine particulate matter, coming from sources such as mold and cooking smoke.

事实上，每家每户的空气中都含有一些来自霉菌和炊烟等来源的细颗粒物。

I know it's hot outside, but ACs can kind of bring in and concentrate some of those fine air particulates.

我知道外面很热，但是空调会把一些空气微粒吸进来并集中起来。

The increased risk of these women was two times that of women who lived in areas with low levels of fine particulate pollution.

与处于低水平污染细颗粒环境的妇女相比，她们面临的风险增加了两倍。

Diesel engines, on the other hand, produce more Nitrogen Oxide and fine particulate matter in the form of soot, which is characterized by heavy black deposits.

另一方面，柴油发动机以烟灰的形式产生更多的氮氧化物和细颗粒物，其特征是大量的黑色沉积物。

In August, breaking with years of precedent, the department abruptly reversed its position on the damages wrought by " fine, particulate matter, " including burn pits.

8 月，打破了多年的先例，该部门突然改变了对 “细小颗粒物”（包括焚烧坑）所造成的损害的立场。

Fine particulate matter - the tiny, deadly particles that can penetrate deep into the lungs and enter the bloodstream - is linked to heart attacks, strokes and respiratory disease.

细微颗粒——也即那些能够深入肺部并进入血液，微小但致命的颗粒——与心脏病、中风和呼吸系统疾病等多种疾病都有关。

They looked for a link between these and aerial levels of fine particulate matter known as PM2.5 because its particles are less than 2.5 microns across.

他们寻找这些与称为 PM2.5 的细颗粒物的空气水平之间的联系，因为它的颗粒直径小于 2.5 微米。

Many experts said that approach was not scientifically sound and that, in the real world, there are no safe levels of the fine particulate pollution associated with the burning of fossil fuels.

许多专家都表示，从科学的角度来讲，这种方法并不可靠，而且，在现实中，化石燃料燃烧产生的细颗粒物污染也不存在什么安全水平。

And not only that, if you expose them to long-term, very fine particulate matter, their brain will age more rapidly, and they will have higher odds of having small, silent strokes.

不仅如此，如果你让他们长期接触非常细小的颗粒物，他们的大脑会老化得更快， 他们患小而无声中风的几率也会更高。

In the past two weeks, there have been over 400 wildfires in Canada, nearly 250 of which that are still uncontrolled, which means they are dispersing a lot of fine particulate matter into the air.

在过去的两周里，加拿大发生了 400 多起野火，其中近 250 起仍未得到控制，也就是说，这些大火正在向空中扩散大量细颗粒物。

Daniel S. Greenbaum, president of the Health Effects Institute, a nonprofit research organization that is funded by the E.P.A. and industry groups, acknowledged there was uncertainty around the effects of fine particulate matter exposure below the standard.

丹尼尔·格林鲍姆是健康影响研究所的所长，这是环保署和行业团体联合资助的一个非盈利研究组织，格林鲍姆承认，低于标准水平的细颗粒物暴露量的影响依然存在不确定性。