It has 5 halls with historical documents, 5 halls on the first floor and another one right under the dome of the building.

它有5个有历史文献的大厅，5个大厅在一层，另一个在建筑的圆顶下。

youdao

All students have access to the Writing Center on the upper floor of this building.

所有学生都可以进入这栋楼上层的写作中心。

youdao

They were on the upper floor of the building.

他们在该建筑物的上层。

《柯林斯英汉双解大词典》

Old Behrman was a painter who lived on the ground floor of the apartment building.

VOA: special.2009.08.01

First, take the case in the elevator is on the ground floor of some building and completely addressed.

首先我们来看看电梯,在一楼时候的情况

耶鲁公开课 - 基础物理课程节选

You can do that on email, you can do that in my office, which is downstairs on the first floor of this building, in LC-109.

发邮件，来办公室找我，我的办公室在这栋楼的1层，LC109室。

耶鲁公开课 - 现代诗歌课程节选

"All of them died either jumping from the 10th floor of the building or while trying to climb down to escape the fire, " said Iqbal Bahar, of Dhaka police.

BBC: Bangladesh clothes workers die in factory fire

It is also expanding into the second floor of its building in Mountain View, Calif.

FORBES: After Doubling Fund Size, Google Ventures Looks For Next Google

Bin Laden and his family were found on the second and third floor of the building.

WHITEHOUSE: Press Briefing