Air quality is monitored for six pollutants: particulate matter, ground-level ozone, sulfur dioxide, nitrogen dioxide, carbon monoxide and lead.

空气质量监测包括颗粒物、地面臭氧、二氧化硫、二氧化氮、一氧化碳和铅六种污染物。

And when it is, it gives off emissions like carbon dioxide, sulfur dioxide, mercury, ash and particulates, all of which can pollute the environment.

当燃烧煤炭时就会产生二氧化碳，二氧化硫、汞、灰尘和微粒，所有这些都会污染环境。

And sort of little particulates that are bad for your lungs.

还有一些对肺部有害的小颗粒。

Which would also screen out particulate matter dangerous to human health.

该过滤器还可以筛选出危害人类健康的颗粒物。

Because the particulates are so tiny, they can sneak past our body's natural defenses and get into our system.

因为这些微粒物质非常微小，它们可以偷偷越过我们体的自然防，从而进入我们内部的体。

She says one solution that might reduce black carbon emissions is gasoline particulate filters.

她表示，汽油颗粒过滤器可能是减少黑碳排放的解决方法。

We block over 99 of particulate of the same size.

我们阻挡了九十九多个相同大小的颗粒物。

It urged more action to reduce particulate matter that damages lungs.

它敦促采取更多行动来减少损害肺部的颗粒物。

But County Health Director Christine Stinson says particulate matter is a concern.

但该县卫生主任克里斯汀·斯廷森表示，悬浮颗粒物是一个令人担忧的问题。

And one of the primary measurements for the Index is particulate matter 2.5.

该指数的主要测量指标之一是“颗粒物 2.5”。

Well, short-term exposure to the particulates from the forest fires is manageable, doctors tell me.

医生告诉我，短期接触森林大火产生的微粒是可控的。

Certain asteroids, like Ryugu and Bennu, are rubble piles, essentially a strange space conglomerate—a type of sedimentary rock—where boulders and particulates are held gravitationally, says planetary scientist Bethany Ehlmann of Caltech.

加州理工学院的行星科学家贝瑟尼·埃尔曼说，某些小行星，比如龙宫和贝努，是碎石堆，本质上是一种奇特的太空体——一种沉积岩——巨石和微粒在重力作用下聚在一起。

Since 3 November, the air quality index (AQI) — a measure of eight pollutants, including fine particulate matter, ozone and sulfur dioxide — in Delhi has remained consistently above 99. Anything above 150 is classified as unhealthy.

自 11 3 日以来，德里的空气质量指数（AQI）一直保持在 99 以上，该指数是对细颗粒物、臭氧和二氧化硫等八种污染物的衡量。

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。

When you breathe them in, toxic particulates can make their way into the bloodstream and have been linked to lung and heart damage, immune system damage and inflammation in humans and animals.

当你吸入它们时，有毒微粒就会进入血液，而人类和动物的肺部损伤、心脏损伤、免疫损伤和炎症均与其有关。

Mr. Wehrum said the analyses the agency is conducting " illuminate the issue" of particulate matter and the question of what level is acceptable for the purposes of policymaking.

韦鲁姆说，该机构正在进行的分析“阐明了”颗粒物问题，也阐明了制定政策时怎样的水平才能被接受的问题。

And the truth is, yes, some particulate matter does come from electric stoves, but they're not combusting methane, which means you're not getting products like nitrogen dioxide.

事实上，是的，电灶确实会释放一些颗粒物，但它们并不燃烧甲烷，这意味着不会有像二氧化氮这样的产物。

Particulate matter can end up deep in the lungs and cause heart attacks, strokes and asthma, he said, adding that the risk is particularly acute in urban areas.

他说，微粒物质最终会被吸入肺部，导致心脏病发作、中风和哮喘，城市地区居民面临的风险尤其严重。

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。

That helps, but disturbances-such as when mains pipes are replaced but service lines to homes are not-can shake out particulates that remain in water.

这是有帮助的，但是也会起到阻碍作用，水中残留的颗粒物会渗出，比如，当总水管被更换，而到家庭的服务线路没有被更换的时候。