来自《耶鲁大学开放课程：基础物理 第13集 第13集》

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  What does that mean?
  什么意思
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  You can go to the Battle of Gettysburg site
  你可以去到盖底斯堡战役战场
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  and stand now and nothing happens to you
  但处于现在时间点上 你不会有事
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  because it's the same place but it's the wrong time.
  因为只有地点是一样的 但时间不同
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  We all realize, same place, same time,
  我们都明白 同一时间同一地点
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  is a congruence in space-time and even after Einstein,
  在时空里叠合在一起 即使爱因斯坦后
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  you cannot say something did not happen.
  你不能说某件事情没有发生
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  Okay. We leave that to politicians please.
  好了 这留着让政客们去纠结吧
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  It did happen.
  它确实发生了
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  It still happened and the equations have the property
  这是由我们的方程所决定的
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  but I've got several events separated in space
  但我这儿有些事件却是在同一时间
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  but at the same time.
  发生在不同的地点