poisonous gas

例句：

1. 1.The factory was evacuated due to a poisonous gas leak.
   由于有毒气体泄漏，工厂被疏散。
2. 2. The children were coughing and gasping for air after inhaling the poisonous gas.
   孩子们吸入了有毒气体后开始咳嗽和喘息。
3. 3. The firefighters had to wear protective gear to avoid breathing in the poisonous gas.
   消防员们不得不穿戴防护装备以避免吸入有毒气体。