gaseous guide

例句：

1. 1. The gaseous cloud was visible from the observation deck.
   从观景台上可以看到那团气体云。
2. 2.Gaseous molecules are constantly moving and colliding with each other.
   气体分子不断移动和相互碰撞。
3. 3. The scientist discovered a new gaseous element in the laboratory.
   科学家在实验室发现了一种新的气体元素。