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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During the second quarter, CEO Bill Klesse said, the company's refineries took advantage of higher margins on products and wider discounts on so-called sour crudeoils.