来自《耶鲁大学开放课程：新生有机化学 第6集 第6集》

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  and that's the hydrogen which was not subtracted, right?
  这就是没有被减掉的氢
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  So it's the biggest game left in town,
  如果你将碳减去的话
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  once you've subtracted the spherical carbons.
  它是唯一剩下的原子
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  Okay, so that's--and the total amount of intensity in that region
  这个区域的电子密度总量
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  is one electron, which is what you expect.
  正如你们所想 是一个电子
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  Now the total amount of deformation density in this region,
  而在这里 也就是在碳碳单键处
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  where there's a single carbon-carbon bond,
  电子密度的总量
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  is only 1/10th of an electron.
  只有十分之一个电子
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  What would Lewis have said?
  路易斯该怎么解释呢
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  Two electrons, it's 1/10th of an electron.
  两个电子 密度却只有十分之一个电子
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  Okay, now let's slice that--
  我们将它切开看看
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  and within the carbon-carbon bonds of the ring,
  在这个芳香环的碳碳键之间