I learn of their menu, their hours, whatever they want to put on their receipt they can put there.

让我了解到他们的菜单，让我了解到了他们的时间，他们想在收据上写什么,就可以在上面写什么。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

So that you get a good idea of what people do in their free time and what the dorms are like.

所以你可以了解人们闲暇时间做什么，宿舍什么样。

沟通很重要 - 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

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