shū / jià / zhōng / jiān / jiā / le / yí / kuài / gé / bǎn / kě / yǐ / bǎ / bù / tóng / zhǒng / lèi / de / shū / fēn / kāi

书架中间加了一块隔板，可以把不同种类的书分开。

A divider was added in the middle of the bookshelf to separate different kinds of books.