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