脊柱

zhù
  1. spinal column
  2. columna vertebralis

CEDICT

  1. (anatomy) vertebral column; spinal column; backbone; spine
  2. vertebral column; spinal column; backbone; spine

Wiktionary

动物背部一连串椎骨排列相接弯曲长骨主要功能在于保护骨髓支撑躯干

重編國語辭典

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