bookshelverWiktionary 原文构词拆分book词根/词干+shelver词根/词干也可拆分为bookshelf词根/词干+-er后缀(added to verbs) A person or thing that does an action indicated by the root verb; used to form an agent noun. · (added to verbs, informal) A person or thing to which the root verb is done or can be done satisfactorily.词源说明From book + shelver or bookshelf + -er.释义（英文）名词 NounA person who places or arranges books on shelves in a library, etc.