They count down the final seconds to midnight as they watch a brightly lit ball slide down a pole on top of a tall building.

VOA: special.2009.12.28

As you come to the top of the building, the elevator has to decelerate, so that it loses its positive velocity and comes to rest.

当你要到顶时,电梯需要减速,此时电梯速度减小最后静止

耶鲁公开课 - 基础物理课程节选

The Council explains on its Web site that early tall buildings were generally measured from the ground floor to the top of the building, not including flagpoles.

VOA: special.2010.03.31

It's an enchanting dreamland on the top floor of an old theater building.

VOA: standard.2010.02.25

Atwater and his colleagues have made prototypes of the design in the lab, and the product doesn't look like the typical solar panels you might see on top of a building.

VOA: standard.2010.02.19