Those atoms can contribute to smog formation in coastal areas.(这些氯原子可以促进沿海地区烟雾的形成。)
There was smog, which I knew was toxic.(有大雾，我知道那是有毒的。)
It also generates much less smog-forming nitrogen oxide.(它燃烧产生的烟雾中的氮氧化物也会急剧减少。)
Hot weather worsens air pollution by turning car exhaust into smog, which can make life miserable for people with asthma and other breathing problems.(炎热的天气使汽车尾气变成烟雾，加剧了空气污染，这可能使患有哮喘和其他有呼吸问题的人的生活更加痛苦。)
Under the cover of the smog, He snatched the pot on the sly.(在烟雾的掩护下，他偷偷地拿走了那只壶。)
There's a lot of smog today.(今天雾很大。)
Most of my friends are moving outside the city to avoid the noise, smog and traffic of the city.(我的大多数朋友都搬到城外来躲避城市的噪音、烟雾和交通。)
Since the 1940s, southern California has had a reputation for smog.(自20世纪40年代以来，南加州一直以烟雾闻名。)
Often they chose—and still are choosing—somewhat colder climates such as Oregon, Idaho and Alaska in order to escape smog, crime and other plagues of urbanization in the Golden State.(他们常常选择——现在依然这样选择——居住在那些气候较为寒冷的地区，比如俄勒冈、爱达荷，还有阿拉斯加，为的是逃避烟雾、犯罪，以及加利福尼亚州城市化进程中的其他问题。)
Almost a seventh of China has been under heavy smog.(中国近七分之一的地区一直处于重度雾霾之下。)
