There are many kinds of hydrocarbon types, including the normal oil, condensate, heavy oil, tar sands and natural gas.

并且油气类型多，既有正常油、凝析油，又有稠油、沥青砂和天然气。

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The extraction method and equipments needed in these kinds of oil fields are distinctive from those in normal oil field.

边际油田由于特殊的地质条件，其开采设施与开采方法也有其特殊性。

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For the concentration of biomarkers, the biodegraded oil is highest, the condensate is lowest, and the normal oil in between.

生物标志物的绝对浓度以凝析油最低，生物降解原油最高，正常原油介于两者之间。

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"We are doing everything we can to contain the oil offshore, defend the shoreline and return people's lives to normal as fast as we can."

VOA: standard.2010.05.31

Allen Hershkowitz with the Natural Resources Defense Council, a private environmental group, says air quality around landfill sites must be carefully checked when oil-contaminated waste is added to normal household trash.

VOA: standard.2010.08.05

In the new normal, oil and gas CEOs can no longer be effective leaders if they don't lead with safety.

FORBES: Leadership

Bucking normal trends, oil prices jumped despite the gains in the equities markets.

FORBES: Stocks See Little Benefit From Mortgage Moves

Under normal circumtances, oil prices might have declined.

FORBES: Slower China Won't Help Ease Oil Prices, Says Gulf Oil CEO