Zhè / zuò / tú / shū / guǎn / de / cáng / shū / liàng / bù / xià / yú / quán / shì / qí / tā / tú / shū / guǎn / de / zǒng / hé

这座图书馆的藏书量不下于全市其他图书馆的总和。

The number of books in this library is no less than the total held by all the other libraries in the city.