asphyxiant gas

例句：

1. 1.The asphyxiant gas was released into the room, causing everyone to cough and gasp for air.
   一种窒息气体被释放到房间里，使每个人都咳嗽并喘气。
2. 2.The asphyxiant gas was so strong that it caused immediate respiratory distress.
   这种窒息气体非常强烈，导致立即的呼吸系统不适。
3. 3. The asphyxiant gas was a major concern during the disaster, as it could lead to serious health problems.
   在这场灾难中，这种窒息气体是一个主要的关注点，因为它可能导致严重的健康问题。