脊索

例句：

1. 1. The spinal cord connects the brain to the rest of the body.
   脊髓将大脑与身体其他部分连接起来。
2. 2. Scientists are exploring the function of the spinal cord in humans.
   科学家们正在研究人类脊髓的功能。
3. 3. The spinal column is responsible for supporting the weight of the body and transmittingsignals from the brain to the muscles.
   脊柱负责支撑身体的重量并从大脑向肌肉传递信号。