bookbinder的复数形式怎么拼写？

Book letter crop not standards bookbinder operations more difficult.书封裁切不标准会给胶订机操作带来难度.To ornament ( a book cover ) with a bookbinder's tool.压印用装订商的压印器装饰 ( 一本书的封面 )The improvements in the interosculated machine and ...

n.装订商...

bookbinder的音标：bookbinder的英式发音音标为：['bʊkbaɪndə(r)]bookbinder的美式发音音标为：['bʊkbaɪndər]...