Petroleum, consisting of crude oil and natural gas, seems to originate from organic matter in marine sediment.

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。

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At a refinery, the crude oil from underground is separated into natural gas, gasoline, kerosene, and various oils.

在炼油厂，从地下提取的原油被分离成天然气、汽油、煤油和各种其他类型的油。

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Crude oil and natural gas production account for nearly half of GDP.

原油和天然气的生产占了GDP的近半数。

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Crosstex Energy is a partnership that engages in midstream natural gas and crude oil businesses including gathering, processing, transmitting and distributing natural gas, plus crude and gas marketing.

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Anything related to the exploration, transport or refining of crude, gas or biofuels anywhere can be found here.

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He called on Congress to allow offshore oil drilling, saying the need to lower crude and gas prices made it urgent.

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