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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According to the EPA, ethanol produced from corn at a modern refinery powered by biogas can represent a 20 percent greenhouse gas reduction compared with regular gasoline.