The human moving system is defined as a rigid frame, which contains 19 articulate entities. Entity rotates around the father node and its son node is the father of another entity at the next level.
将人体运动系统视为一由19个实体构成的刚性框架系统，每一实体上的父结点绕与上级实体连接的关节点旋转，该实体另一端的子结点则作为下一级实体的父结点。
The past few decades, the pomegranate tree node can be a lot of fruit in each quarter, the father will be told Hui-Zhen Li and her brothers to the alley's neighbors sent.
在过去几十年中，石榴树节点可以大量水果在每个季度，父亲会被告知李惠珍和她的兄弟胡同的邻国发出。
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