1. 脊椎;脊柱
Your spine is the row of bones down your back.
spine的解释
2. 书脊
The spine of a book is the narrow stiff part which the pages and covers are attached to.
3. (动物身体上的)棘状突起;(植物上的)棘，刺，针
Spines are also long, sharp points on an animal's body or on a plant.
名词脊柱；脊椎；书脊；（植物的）刺网络脊骨；棘；中心