a flat length of wood or rigid material, attached to a wall or forming part of a piece of furniture, that provides a surface for the storage or display of objects.
noun [集合/集体]架子(shelf的复数)
There were shelves full of dusty books. 有些书架上全是布满灰尘的书。
verb [vt. 及物动词]装架(shelve 的第三人称单数形式)
All the shelves were crammed with books. 所有的架子上都堆满了书。