来自《耶鲁大学开放课程：新生有机化学 第3集 第3集》

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  and then you can get more and more and more.
  再往下走 就能得到更多层的壳
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  So this is what Thomson was thinking about.
  以上就是汤姆森的想法
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  But that's just two dimensions. Right?
  但这只是二维世界里的情况
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  Three dimensions is a bigger problem.
  三维世界的麻烦就要大多了
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  But he could say,
  但他仍从数学上
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  he was able to say something mathematically about eight.
  对八电子结构发表了一点意见
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  "The equilibrium of eight corpuscles
  分布在立方体的八角上的微粒子结构
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  at the corners of a cube is unstable."
  其平衡是不稳定的
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  Even if you have the spherical charge--
  即便正电荷呈现球状的分布
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  so it's not exactly Earnshaw--
  这和恩绍的想法又不完全一样了
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  still you can't get eight at the corners of a cube.
  呈立方体的八电子结构还是难以实现的
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  Now Lewis comes along and in 1923,
  1923年我们的路易斯来了