架子 (jiàzi) is a noun meaning "shelf," "rack," or "frame." It refers to a structure used for storing or displaying items, and commonly appears in descriptions of shops, rooms, or storage areas.
书店的架子上摆满了各种各样的书。
Shūdiàn de jiàzi shàng bǎimǎn le gèzhǒng gèyàng de shū.
The shelves in the bookstore are filled with all kinds of books.
请你帮我把这个箱子放到架子上。
Qǐng nǐ bāng wǒ bǎ zhège xiāngzi fàng dào jiàzi shàng.
Please help me put this box on the shelf.
厨房的架子上放着调料和杯子。
Chúfáng de jiàzi shàng fàngzhe tiáoliào hé bēizi.
There are seasonings and cups on the kitchen shelf.