脊梁

I had a queer sensation as if a worm was creeping down my spine.

我有一种可疑感觉, 好象有个虫子在顺着我往下爬似。

He broke his spine in a fall from a horse.

他从马跌下摔断了骨。

He sustained an injury to his spine when he fell off his horse.

他从马摔下来, 伤了骨。