n.脊柱;脊椎;(动植物的)刺;书脊;
例句:
cactus spines
仙人掌的刺
It is injected into the fluid in the spine.
它经脊柱注入脑脊液.
The hairs on his mane bristled and a shiver shot down his spine.
它的鬃毛直立起来,脊柱在微微颤动.