加快生物燃油的生产，迎接新的挑战，刘运权，美国雪佛龙石油公司能源技术分公司。

Accelerating Biofuel Production to Meet the New Challenges, Yunquan Liu, Chevron Energy Technology Company.

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埃克森美孚和雪佛龙这两家美国最大石油公司的股价今年已分别下跌了17%和18%。

Shares of Exxon and Chevron, the two largest U.S.-based oil companies, are down 17% and 18%, respectively, this year.

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现在对于一辆汽油车，你买了汽车，然后你基本上得订购某个石油公司的产品——埃克森石油公司，雪佛龙公司，或其它公司。

Today with a gasoline car, you buy your car and then you basically have a subscription with an oil company — Exxon, Chevron, whoever.

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