Each one is dedicated to finishing the space station — now 81 percent complete — and hauling up supplies and big spare parts that are too big to fly on any other rocketship.
每一次任务都将用于成太空站的建设--现成了81%--以及运送补给和大得无法飞船上的飞船配件。
Each one is dedicated to finishing the space station — now 81 percent complete — and hauling up supplies and big spare parts that are too big to fly on any other rocketship.
每一次任务都将用于成太空站的建设--现成了81%--以及运送补给和大得无法飞船上的飞船配件。
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