This week a German carmaker, BMW, revealed an alternative approach: an otherwise normal saloon car that can run with a hydrogen-powered internal-combustion engine.

在本周，德国汽车制造商宝马公司发布了一个可供选择的途径，除了通常的汽油引擎外，人们还可以选择同时带有以氢为燃料的内燃机轿车。

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The Equinox Fuel Cell is powered by an engine that USES hydrogen to produce electricity.

艾诺斯燃料电池汽车所用的发动机是使用氢气生产电能的。

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Schwarzenegger, who has taken to helping market cars that run on cleaner and more fuel efficient technology, had just finished inspecting a Volkswagen Passat with a hydrogen-powered engine.

施瓦辛格现在已置身于更环保和低油耗和汽车的推广之中，他刚刚完成了对大众PASSAT氢动力引擎的视察。

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This week it unveiled a prototype version of its 7-Series saloon car that has a hydrogen-powered engine.

ECONOMIST: Hydrogen-powered cars

It's powered by a hydrogen internal combustion engine that turns a 44-kilowatt electric generator that runs eight propellers and whatever communications equipment is loaded on board.

FORBES: Companies, People, Ideas

It is powered by a hydrogen fuel-cell engine, which converts hydrogen gas into energy.

NPR: On the Road with GM's Newest Hydrogen Car