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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It adds that shale gas had comprised about 23 percent of all natural gas production in 2010 and that it expects the fuel to make up roughly 46 percent of all such development by 2035.

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Supplies like food, water, diesel fuel and ammunition make up the other 80%.

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Fuel bills now make up about 50% of its operating costs.

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