在架子上的英文是：On the shelf或者on the shelves.
on单词释义：在……上、由……支撑着、在上、表示持续性、向前、穿在身上、穿着、戴着。
the单词释义：指已提到或易领会到的人或事物、正常的或不言而喻的人或事物、解说时用。
shelf单词释义：架子，搁板、突出的岩石、陆架、陆棚。
常用的语法词组搭配：
1、to be on the shelf：上架。
2、......is on the shelf：......在架子上。
3、......are on the shelf：......在架子上。
4、......was on the shelf：......在架子上。
5、Lightguide Distribution Shelf (AT&T)：Lightguide分配架(AT&T)。
6、It's on the shelf：在书架上面。
相关例句：
1、他花了大部分的时间把东西叠放在架子上。
He spent most of the time stacking shelves.
2、全部乱七八糟地堆在架子上。
All of it stacked up higgledy-piggledy on the shelves.
3、长长的吊瓜悬挂在架子上。
The long pumpkin hanged on the shelf.
4、布丁整齐地排列在架子上。
Thee puddings are neatly ranged on the shelf.
5、他放了些罐子在架子上。
He put those cans on the shelf.
6、有些蔷薇花攀在架子上。
Some roses climb on frames.
7、我爷爷的大钟表太大了，在架子上放不下。
My grandfather's clock was too large for the shelf.
8、有一些故事书在架子上。
There are some storybooks on the shelf.
9、我进入那家饭店时发现杯子整齐地排列在架子上。
When I entered the restaurant, I found the cups ranked neatly on the shelf .
10、随后，在铁架子上，记者并未发现是哪个部门安装的踪迹。
Subsequently , in the iron hangers , the reporter has not found any traces of the installation sector .
11、这是三本书。它们在架子上。这本书在另外两本书之间。
These are three books. They are on a shelf. This book is between the other two books.
12、那些盘子在架子上。
Those plates are on the shelf.
13、我现在手里有这本书。它在架子上。它在书架上另外两本书之间。
I havw the book in hand now. It was on the shelf. It was between the other two books on the shelf.
14、我的许多书在书架上。
Many of my books are on the shelf.
15、请把这些书放到书架上。
Please put these books on the shelf.