The Shenzhou docking missions are seen as key milestones along the path to building a space station in orbit.

神舟对接任务被视作建设在轨空间站道路上的一座关键里程碑。

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This article gives an algorithm of building search path, which has a more efficient space and time complexity.

本文提出了一种基于宽度优先搜索的路径生成算法，具有较好的时间复杂性和空间复杂性。

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