藉尾骨的 sacro-coccygeal
尾侧的或尾骨的 caudal or coccygeal
坐骨尾骨的 ischiococcygeal
下叶由增宽的尾下骨片 hypural bone
尾巴的骨肉部分 dock
脊柱的最后一段是背部的下半部位，处于靠近尾骨的地方。
The finale segment of the spine is the lower portion of the back located near the tail bone.
继续把肩胛骨压入背部，拓宽它们，拉它们朝向尾骨的方向。
Continue to press the shoulder blades against the back, widen them, and draw them toward the tailbone.
如果尾巴向下弯，其尾骨的末端大约可以延伸到飞节的位置。
In a curved downward position the tip of the tail bone should reach no further than the hock joint.
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