Having an abundance of water on the moon would make it easier to set up a base camp for astronauts by providing drinking water and an ingredient for rocket fuel.

月球上有丰富的水，可以使为太空人建立基地营比较容易，因可提供饮用水和火箭燃料的一种成分。

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In response, Bolden referred to the possibility of setting up fuel depots in orbit, which could enable smaller rockets to make trips beyond low-Earth orbit.

在答复中，博尔登提及在轨道中建立燃料补给站的可能，这样小型火箭就可以实现低地球轨道的运行。

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As additional products enter the marketplace, commercial sales will make up an increasingly large share of total fuel cell expenditures.

由于还有其他产品进入市场，燃料电池的商业销售将逐步增长。

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Shuttering even one U.S. nuclear power plant could unleash massive carbon emissions if fossil-fuel plants were used to make up the lost power, according to a new study released this weekend by researchers at Carnegie Mellon University.

FORBES: Shutting Nuclear Plants Would Boost Coal And Carbon Emissions

And all these companies start coming up with new technologies that make your cars more fuel-efficient.

WHITEHOUSE: Help for Homeowners in the Hardest Hit States

In America, where the price of a gallon of petrol can be less than the price of a gallon of bottled water, large fuel-guzzling trucks and sport utility vehicles (urban assault vehicles) make up more than half of the market.

ECONOMIST: Car design