Denver experienced the worst air quality of any city in the world for several hours Saturday as heavy smoke from raging western wildfires polluted the city.
원문출처 : https://www.cnn.com/2021/08/08/weather/us-western-wildfires-sunday/index.html
원문출처 : https://www.cnn.com/2021/08/08/weather/us-western-wildfires-sunday/index.html