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1·Today, the org chart is hyperlinked, not hierarchical.

今天，组织结构体现为超链接，而不是等级制。

2·I described and analyzed the flow chart of the collision detection algorithm of hierarchical bounding volume and intersection testing method of the basic geometrical elements.

分析了层次包围盒碰撞检测算法的实现流程和基本几何元素间的相交测试计算。