二氧化硫

例句：

1. 1. The factoryemits large amounts of sulfur dioxide into the air.
   这家工厂排放大量的二氧化硫到空气中。
2. 2. Smog caused by sulfurdioxide is a major environmental problem.
   由二氧化硫引起的烟雾是一个重要的环境问题。
3. 3. The government has been working to reducethe levels of sulfur dioxide in the atmosphere.
   政府一直在努力减少大气中的二氧化硫水平。