1
be on a/the shelf
The books are on the shelf.
书在架子上。
搁板；架子
先理解核心含义，再看它在真实句子里的用法。
搁板；架子
A flat, rigid board or surface fixed to a wall or forming part of furniture, used for holding or displaying objects.
The books are on the shelf.
书在架子上。
A flat, rigid structure, fixed at right angles to a wall or forming a part of a cabinet, desk, etc., and used to display, store, or support objects.
A reef, sandbar, or shoal.
放置物品的水平支撑面
a support that consists of a horizontal surface for holding objects
The capacity of such an object
I placed the book on the top shelf.
我把书放在了顶层架子上。
The kitchen shelves are filled with spices.
厨房的架子上摆满了香料。
Please check the shelf in the garage for the tools.
请检查车库里的架子，工具在那里。
The books are on the shelf.
书在架子上。
也可用复数形式 shelves，如 put books on the shelves。
She placed the trophy on a shelf.
她把奖杯放在架子上。
常用复数形式 shelves of，如 shelves of books。
He has a shelf of classic novels.
他有一架子经典小说。
Not this
I need to buy a new shelf for my books.
Use this
I need to buy new shelves for my books.
当表达多个架子时，应使用复数形式 shelves，而非单数 shelf。
Not this
Please shelf the books on the desk.
Use this
Please shelve the books on the desk.
Shelf 是名词，意为‘架子’；表示‘把…放在架子上’的动词是 shelve。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
在架子上
The book is on the shelf.
书在架子上。
保质期
This product has a long shelf life.
这个产品保质期长。
书架
I need a new bookshelf for my room.
我的房间需要一个新书架。
货架空间
They increased shelf space for the new product.
他们增加了新产品的货架空间。
可常温保存的
This milk is shelf-stable for months.
这种牛奶可常温保存数月。
搁板支架
Install the shelf brackets securely.
安全地安装搁板支架。
现成的
We bought the software off the shelf.
我们买了现成的软件。
被搁置的；未婚的（旧用法）
She felt she was left on the shelf.
她觉得自己被冷落了。
保质期
The product has a short shelf life.
该产品保质期短。
那是什么？一个架子？
In the movie Elf (2003), Buddy the Elf encounters a shelf for the first time and asks this question, reflecting his innocence and childlike wonder.
在电影《圣诞精灵》（2003）中，精灵巴迪第一次看到架子时问出这个问题，体现了他天真烂漫和充满好奇的性格。
Use shelf naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
shelf 可拆解为 she + lf，联想‘她（she）来放（lf 像‘来放’的缩写）东西到架子上’。
register: neutral; settings: home, office, library; note_zh: 通常用于日常场景，如家中、办公室或图书馆的架子。
Plural form is 'shelves'.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.