The advantage of esters is that they substitute directly for petroleum-based diesel fuel.

酯类的优势是它们直接替代了石油制柴油燃料。

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It is used for petroleum exploration and engineering tasks such as simulating aircraft designs.

用于石油勘探和工程任务，如模拟飞机的设计。

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Because of its accuracy in outlining the Earth's subsurface, the seismic-reflection method remains the most important tool in the search for petroleum reserves.

文章首句指出：“由于‘地震反射法’(sr)在勾划地球的地下层面这方面的准确性，该方法一直是探寻石油储备的最重要的工具。” 这是一个判断句，为结论。

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He promised a full investigation of the disaster, and said that petroleum giant BP will be held responsible for the accident.

VOA: standard.2010.05.02

They underscored support for legislation already introduced that,among other things, seeks to cut the flow of refined petroleum products into Iran.

VOA: standard.2010.04.14

"To get back to the 1998 level of production, Venezuela would need to invest for the next 10 years to upgrade its petroleum operations.

VOA: standard.2010.08.06

China and the United States in particular are awash with liquidity and thirsty for petroleum.

ECONOMIST: Other reasons to worry

Increased Japanese energy purchases will come at a time when demand for petroleum will be on an upward path.

FORBES: The Japanese Disaster: What's Next for Japan? For Us?

He believes the public will get ever more fed up paying for petroleum and sending dollars overseas, and ever more comfortable buying and driving electric vehicles.

FORBES: Coda Automotive's Electric Vehicle Has An Uphill Climb Ahead