释义
n.
a thing or person that binds something, in particular
起装订（或捆扎、黏合）作用的东西（或人），尤指：
a cover for holding magazines or loose sheets of paper together
杂志封面，活页夹。
a substance that acts cohesively
黏合剂，黏结料。
a reaping machine that binds grain into sheaves
割捆机。
a bookbinder
（书籍）装订机；装订工。