toxic smog

基本解释

Oppressive heat and waves of toxic smog in Moscow have seen the death rate reach 700 a day, a senior Russian health official said today.
英国《卫报》报道，俄罗斯卫生部高级官员今天表示，骇人的热浪与有毒烟雾已经使莫斯科每天的死亡人数达到了700人。
In polluted urban areas, they also enhance production of ozone, a key ingredient of smog that is potentially toxic to animal and plant life.
在受污染的市区，他们还促进臭氧的产生，臭氧是对动物和植物生命有潜在毒性的烟雾的关键成分。
There was smog, which I knew was toxic.
有大雾，我知道那是有毒的。

As Muscovites choked in toxic smog and morgues struggled to cope with a doubling of the death rate, Russia's president attempted to redirect public anger towards local officials, long stripped of independent power by the Kremlin.
ECONOMIST: Russia’s wildfires
For weeks, industrialized cities in northern China have been dealing with bouts of sickening smog several times more toxic than Utah's.
NPR: Sickening Fog Settles Over Salt Lake City Area
Oil and gas production, from the well site to processing plants to storage tanks and transmission lines, releases toxic and cancer-causing air pollutants, smog-forming gases and methane, a potent greenhouse gas blamed for global warming.
NPR: Report: Flaws In EPA Drilling Pollution Data