smog

中英例句：

1. Smog has thickened the air.
   煙霧於天空陰霾。
2. On the night of December1,1930, a cloud of smog moved over a valley in Belgium, which caused thousands of people to become ill.
   1930年12月1日晚上，一片煙霧飄過比利時的一個山谷，這使數千人病倒了。
3. Smog hung in the sky (over the city).
   (城市)上空煙霧瀰漫。

英文解釋：

名詞 smog:

1. air pollution by a mixture of smoke and fog
   同義詞：smogginess

詞型變化：