中英文对照的油气常识，很多常见的中英文专业词汇。

石油和天然气是储存在地层中的物质

它们是从分解的动植物残骸演变而来

科学家们认为石油是这样形成的：
很久很久以前死亡的动植物被厚厚的沉积物缓慢掩埋。经过很长的时间，在一定的压力和温度下，这些有机物转变成立今天人们发现的石油。
(例如：我们现在知道堆积的垃圾可以产生沼气) 

Oil and Gas are substances found within the earth’s crust.

They are thought to come from decomposed plant and animal matter.

Scientists believe the plants and animals died long ago, and were slowly buried by thick layers of sediments. Over a long period of time, and with pressure and temperature, the organic materials were converted into the oil and gas which are found today.

(For example, we know that present day garbage dumps give off methane gas)