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。

A large multiple of the number of people killed by COVID are killed annually by the particulate pollution that comes from fossil fuels.

每年死于 COVID的人数中有很大一部分死于来自化石燃料的微粒污染。

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。