spinal cord

spinal-cord的词性：
n.（名词）

1. The thick, whitish cord of nerve tissue that extends from the medulla oblongata down through the spinal column and from which the spinal nerves branch off to various parts of the body.
脊髓：从延髓开始沿脊柱延伸的粘稠、白色、索状的神经组织，由脊髓开始脊椎神经分叉伸向身体各个部位