This school has three floors.

这学校楼高三层。

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The villa has three floors.

别墅有三层。

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The Saigon Court has three floors, and can seat around 90.

贡苑法式越南餐厅有三层，大概90个座位。

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The museum not only has a display area open to the public, but also has an archival collection of more than one million specimens taking up three floors.

VOA: standard.2009.12.08

David Lucas trained at the Savoy, which has three floors of kitchens and 70 chefs.

BBC: Savoy chef serves school dinners

Dr. Kelly has turned three floors into a combined residence and gallery, which will open to the public on Dec. 11, to offer for sale what he owns so that he can collect more.

WSJ: Living in Deco-ed Halls | House Tour

And back in Brooklyn, the Brooklyn Flea, a year-round, weekend-only market presenting a curated mix of indie designers, regional food producers and vintage collectors, has moved indoors for winter, sprawling over three floors of a former bank in Fort Greene.

BBC: One-of-a-kind holiday shopping in NYC