来自《耶鲁大学开放课程：新生有机化学 第7集 第7集》

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  What's the curvature at that point do you think? Shai?
  那点的曲率是多少 沙艾
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  It looks straight, zero curvature.
  看上去还是直的 所以是零
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  So does that mean that this value is zero?
  那动能还是零吗
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  Ah, the amplitude is zero there too.
  不一定 因为那里的振幅也是零
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  So really you can't be sure. Right?
  所以就很难判断了
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  So that one we're going to have to leave questionable,
  那我们就暂时搁置一下
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  that's a question mark. How about out here?
  那是个疑问 那这一点呢
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  Not curved. So what's the kinetic energy?
  也不弯曲 动能是多少
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  Josh?
  约书亚你知道吗
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  Questionable, right?
  还是个疑问
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  Because the amplitude is zero again;
  因为那一点振幅也是零
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  zero in the numerator, also zero in the denominator;
  分子分母都是零