- [countable]
a hard cover for holding sheets of paper, magazines, etc. together 活页夹 a ring binder 活页夹 Subscribe today and get a free binder with your first issue. 现在订阅,第一期能免费得到一个活页夹。
- [countable]
a person or machine that puts covers on books 装订工;装订机 - [countable, uncountable]
a substance that makes things stick or mix together in a solid form 黏合剂;黏结剂 - [countable]
a machine that fastens wheat into bunches after it has been cut (谷物)割捆机