石油的组成与其形成、演化和保存有着必然联系。
Petroleum is related to the form, evolvement and preservation of it.
油藏是珍贵的地下石油堆积物,而油田是由一个或多个油藏所组成的地下区域。
Oil pools are valuable underground accumulations of oil, and oil fields are regions underlain by one or more oil pools.
石油由原油和天然气组成,它们似乎来源于海洋沉积物中的有机物质。
Petroleum, consisting of crude oil and natural gas, seems to originate from organic matter in marine sediment.
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