n.脊柱；脊椎；书脊；尖刺
His spine developed a slight curve. 他的脊柱有点弯曲。
He got an injury to his spine when he fell off his horse. 他从马上摔下来，伤了脊梁骨。
Crimp spine on pages for permanent binding. 用装订机装订好书脊。
A little red cover with a broken spine. 那书有一个红红的封面和破败的书脊。
