Advocates like the former oil tycoon T. Boone Pickens have also long sought to promote it as a substitute for coal in electricity generation or gasoline in a new generation of natural gas cars.

前油业大亨皮肯斯这样的支持者也一直以来试图将其作为电煤的替代者和在新型的天然气车中作为汽油的替代者。

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CWS (coal water slurry) is a new substitute for oil fuel which has been widely used.

作为新型代油燃料，水煤浆有广阔的应用前景。

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The direct coal liquefaction technology, as one of the important routes to substitute oil, has attracted people's attention and concern for a long time.

煤直接液化技术作为石油替代的重要途径之一，长期以来一直受到人们的关注。

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It produces less carbon dioxide for a unit of energy than coal or oil, so the climate will benefit to the degree that gas replaces either of those: it will mostly substitute for coal, though some oil too, especially if gas-powered trucking becomes widespread.

ECONOMIST: Natural gas

But wind farms--which substitute for coal as a fuel for electricity--have little to do with oil prices.

FORBES: The Oilmen Cometh