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The exercise requires a large wall (or floor space) and an ample supply of sticky notes.

这种练习需要一堵很大的墙壁（或地板空间），以及充足的便签。

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A fall is defined as an event which results in a person coming to rest inadvertently on the ground or floor or other lower level.

跌倒的定义为使人不慎跌倒在地面或地板或其他地面较低的地方的事故。

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The center of the museum is open, so people can look up toward the roof or down toward the ground floor.

VOA: special.2009.04.06

People if you're coming in now, you can sit up here, or you even can sit on the floor up here. It's one big happy family.

刚进来的同学，可以坐在这，也可以坐在地上,这是个快乐的大家庭啊。

麻省理工公开课 - 固态化学导论课程节选

you would probably spend at least an hour or an hour and a half on each floor.

每层楼你大概要看一个或者一个半小时。

大都会艺术博物馆 - SpeakingMax英语口语达人

Make sure it's heavy, and that it's firmly bolted to a wall or floor.

CNN: ASIANOW - TIME Money | Keeping It Safe | 11/99

Even when not involved in play, as you can't touch the sides or floor of the pool and must tread water.

BBC: Last Updated: Friday October 28 2005 17:05 GMT

Torchieres or floor lamps with an upward glow or more traditional shade brighten corners and reading nooks and add extra light to a dark room.

FORBES: 10 Easy Ways To Decorate Your Home With Lighting