hydrocarbon water gas process

例句：

1. 1. The petroleum industry relies heavily on hydrocarbons for its production.
   石油工业严重依赖烃类化合物进行生产。
2. 2. The molecule of hydrocarbon is composed of carbon and hydrogen atoms.
   烃分子由碳和氢原子组成。
3. 3.The hydrocarbon molecules are found in many natural gases.
   烃分子存在于许多天然气中。