I already mentioned that. It's like the ground floor.

我之前已经提到过这个，它就像是楼房的一楼。

麻省理工公开课 - 固态化学导论课程节选

But I mean, if you're passionate about the environment, if you’re passionate about building and so on,

但你若真正热爱这个环境，对楼房建造充满激情，

建筑学专业教授 - SpeakingMax英语口语达人

So the point is, this equation, it does not know about the building.

关键是,这个方程,和楼房并没有关系

耶鲁公开课 - 基础物理课程节选

Now this is a rain gauge, and it's sitting on a roof of a building, and when the water falls into this gauge, it sends a signal to the logic unit of the computer, which immediately notifies the memory bank of the computer to seek out its instructions for a rainy day.

这是一个雨量测量器，安装在一个楼房的,屋顶上，当水流入到这个测量器，它就给计算机的逻辑部件发送一个信号，计算机立即通知内存条,为下雨天找出相应的指令。

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and there’s been the depression and there's no building and there's no work for architects,

你时而会遇上市场低迷，没有楼房可建造，建筑师找不到活干。

建筑学专业教授 - SpeakingMax英语口语达人

If that's all it knows, then in that scenario there is no building or anything else; it continues a trajectory both forward in time and backward in time, and it says that whatever seconds, one second before you set your clock to 0, it would've been on the ground.

如果是这样,在那种模式下,没有楼房或者别的什么,物体的运动轨迹可以沿时间可以向后延伸,也可以向前延伸,不管时间取什么值,在零点前一秒时,物体就在地面上

耶鲁公开课 - 基础物理课程节选