“书脊”的拼音

“书脊”的英语可以翻译为：spine，ridge，backbone ...

那书脊是烫金的.The spine is tooled in gold.这本书的书脊很漂亮,很吸引人.The spine of the book is very beautiful and attractive.圆脊机: 把书脊做成凸起圆弧的机器.Back rounding machine: Machine for rounding the back of a book....