Crude oil is a mixture of various hydrocarbons and is valuable in this natural form.

原油是碳氢化合物的混合物，是各种形式的有价值的这个自然。

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Crude petroleum (oil) and other hydrocarbons produced at the wellhead in liquid form; includes distillates or condensate recovered or extracted from natural gas.

指原油和以液态形式在井口产出的其他烃类；包括从天然气中回收的凝析液。

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Crude oil group analysis shows that the bacteria can degrade nonhydrocarbon and long chain saturated hydrocarbons.

原油族组分分析结果表明，菌种能够降解稠油中的非烃和长链饱和烃。

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Workers quickly fixed a minor leak in a cat cracking unit--where complex hydrocarbons in crude are broken down into smaller molecules.

FORBES: No Time To Waste

Driven by high prices and new drilling methods, U.S. production of crude and other liquid hydrocarbons is on track to rise 7 percent this year to an average of 10.9 million barrels per day.

FORBES: IEA Report: USA Set To Become Number One Oil Producer By 2020-Energy Independent By 2035

The chart on the right takes data from the US Energy Information Agency and plots total US inventories of crude plus all other categories of liquid hydrocarbons, and shows the change between the week ending on the x-axis date, and the inventories for the like week of 2010.

FORBES: Falling Oil Prices Make No Sense