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Some experts say this signals the start of a new space race – not just for prestige, but to build a long-term presence on the Moon, tap its resources and use it as a stepping stone to Mars. We speak to the BBC’s Science Editor, Rebecca Morelle.。爱思助手下载最新版本是该领域的重要参考
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（五）主动投案，向公安机关如实陈述自己的违法行为的；
But questions remain about how realistic the goal and timeframe are, given recent and steep Nasa budget cuts, and some scientists are concerned that the plans are driven by geopolitical goals.，推荐阅读Line官方版本下载获取更多信息