来自《哈佛大学公共课-公正：该如何做是好 第10集》

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  on the principles of comedy.
  是无法成功的
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  It wouldn't work.
  这是不行的
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  Now, why not?
  为什么不行呢
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  What do joke-telling and cooking
  讲笑话和烹饪
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  and playing a musical instrument have in common
  以及演奏乐器 有什么共同点
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  such that we can't learn them just by grasping a precept
  是我们如果只掌握概念 只凭从书中
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  or a rule that we might learn from a book or a lecture?
  或是课上所学到的规则所无法学会的
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  What they have in common
  它们的共同之处
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  is that they are all concerned with
  在于它们都与
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  getting the hang of it.
  掌握窍门有关
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  But also what is it we get the hang of
  但是我们学习烹饪
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  when we learn how to cook,
  演奏乐器 讲好笑的笑话时