Water ice could enable the creation of a self-sustaining moon base someday, a mining camp perhaps, or a departure point for further space exploration.

某天水冻冰块可能会创造一个自给自足的月球基地，也可能是采矿营地，或者是更远的太空探索的起点。

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Through these efforts we will develop the skills and techniques necessary to sustain further space exploration.

这些努力将有助于我们继续开发深入太空探索所需要的手段和技术。

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Establishing an extended human presence on the moon could vastly reduce the costs of further space exploration, making possible ever more ambitious missions.

通过这些努力，我们将获得在太空进行更远的探索所需要的技能。

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Establishing an extended human presence on the moon could vastly reduce the cost of further space exploration, making possible ever more ambitious missions.

CNN: Bush: 'It is time for America to take the next steps' in space

Through these efforts, we will develop the skills and techniques necessary to sustain further space exploration.

CNN: Bush: 'It is time for America to take the next steps' in space

It is hoped the return to space after a two-and-a-half-year absence will restore people's faith in the shuttle programme and boost American expectations for further exploration of space.

BBC: NEWS | Science/Nature | Nasa reflects on a 'great day'