sour gas

例句：

1. 1. The factory is releasing a lot of sour gas into the air.
   工厂正在向空气中释放大量的酸气。
2. 2. The chemical reaction produces a sour gas that can be harmful to humans.
   化学反应产生了一种酸气，对人有害。
3. 3.The smell of the sour gas made everyone uncomfortable.
   酸气的气味让每个人都感到不舒服。