煤气

例句：

1. 1. The house is powered by natural gas.
   这所房子用天然气供电。
2. 2. Gasoline is a common fuel for cars.
   汽油是汽车常用的燃料。
3. 3. The old stove uses coal gas as fuel.
   旧式炉灶使用煤气作为燃料。