来自《耶鲁大学开放课程：新生有机化学 第5集 第5集》

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  But you can see a pattern is emerging,
  我们可以发现一个特殊的规律
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  and when you're very, very far away from these,
  当你离这两个电子足够远时
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  compared to the distance between the electrons,
  这个远 是相对于两电子间的距离而言
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  as indeed you are in these samples we're talking about
  就像实际情况中我们要检测的样本
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  where you have an infinitesimal crystal
  样本晶体是极其小的
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  and the detector plateis a substantial distance away--
  相比之下 信号接收盘与之离得很远
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  -- the electrons are really close to one another.
  因为两个电子靠得非常近
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  So you're way, way, way far away on the scale
  观测者与样品的距离比两电子的间距
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  of the distance between the electrons.
  相对来说就要大得多的多得多了
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  And now you can see what pattern there is
  从这样的远处的观察会发现一个规律
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  for high points and low points, for waves.
  波峰和波谷的形成规律
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  Because you can see here that there's a pattern like that,
  在这里 你们可以看到波峰