To lower cost in space transportation is one of the keys to the exploitation and exploration of space.

低成本空间运输是实现人类对太空探索和开发的重要关键之一。

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To lower cost in space transportation is one of the keys to the exploitation and exploration of space.

低成本空间运输是实现人类对太空探索和开发的重要关键之一。

youdao