wet gas

例句：

1. 1.The wet gas is causing the fire to spread rapidly.
   湿气正在迅速蔓延。
2. 2. The damp gas was making it difficult for us to breathe.
   湿煤气让我们难以呼吸。
3. 3. The wet gas smelled strongly of burning wood.
   湿煤气闻起来像燃烧的木头味。