gaseous fuel water content

例句：

1. 1. The atmosphere is mainly composed of gaseous elements.
   大气主要由气体元素组成。
2. 2. The gaseous composition of the atmosphere varies with altitude.
   大气的气体组成随海拔高度变化而变化。
3. 3. Gases are essential for life on Earth.
   气体对地球上的生命至关重要。