tail bone

常见例句

• The coccyx is a small bone at the base of the spine.
  尾骨是脊骨底部的一塊小骨。
• It can be described as the master sphincter of the entire pelvic area, and it runs from the pubic bone in the front all the way to the coccyx, or end of the spine, in the back.
  可以說這塊肌肉是整個骨盆區的主要括約肌，它從前方的恥骨一直延伸到尾骨，或曏後方終止於脊柱。
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