crude gas

例句：

1. 1. The refinery processes crude gas to produce refined oil.
   炼油厂将原油气加工成精炼油。
2. 2.Crude gas is a valuable resource that can be used for heating and electricity generation.
   原油气是一种宝贵的资源，可以用来供暖和发电。
3. 3.The crude gas pipeline is essential for transporting natural gas across the country.
   原油气管道对于输送天然气全国至关重要。