poison vapours

例句：

1. 1. The factory has been releasing toxic vapours into the air.
   这家工厂一直在向空气中排放有毒气体。
2. 2.The doctor warned us about the dangers of breathing in poisonous vapours.
   医生警告我们要注意吸入有毒气体的危险。
3. 3.The chemical plant is known for producing poisonous vapours that can cause respiratory problems.
   这家化工厂以生产有毒蒸气而闻名，这些蒸气可能会导致呼吸问题。