脊梁

He broke his spine in a fall from a horse.

他从马上跌下摔断了梁骨。

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

他从马上摔下来, 伤了梁骨。

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

有一种可疑, 好象有个子在顺着梁往下爬似。