Hydrogen is "just about the worst possible vehicle fuel", says Robert Zubrin, a rocket scientist and the author of "Energy Victory", a book on the post-petroleum future.

氢“只是最坏情况下的汽车燃料选择，”火箭科学家罗伯特·祖布林说，他还是《能源的胜利》的作者，这是一本讲述关于后石油未来的书。

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But PetroChina has said Singapore Petroleum could serve as a platform for future transactions.

但中石油已经表示，新加坡石油公司可以为未来的收购提供一个平台。

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In the future, fuel cells could power our cars, with hydrogen replacing the petroleum fuel that is used in most vehicles today.

在将来，我们的汽车可以用燃料电池驱动，而氢气会替代今天多数车辆使用的石油燃料。

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The future of the petroleum balance is always shrouded in a fog of uncertainty.

FORBES: Petroleum Balance

No matter how much oil the United States and its friends in the Western Hemisphere produce, the Middle East remains a principal global petroleum producer for the foreseeable future.

CNN: America, the Saudi Arabia of tomorrow

Although much of the publicity for fuel cells has centered on the possible future replacement of petroleum-based fuels in automobiles, Redstone is much more confident in the viability of Medis products designed for applications that may be more mundane but just as ubiquitous.

FORBES: Fuel Cell Firm Guns For Military Money