来自《耶鲁大学开放课程：1600年后西方社会的流行病 第2集 第2集》

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  in different proportions, of course.
  当然它们的比例各不相同
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  And this went on over the centuries,
  这个观点流行了好几个世纪
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  and there were four seasons,
  然后出现了四个季节
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  four winds,
  四个方向的风
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  later on four evangelists.
  后来出现了四个福音传教士
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  The point for us is there was also a microcosm,
  我们需要关注的是还有一个微观的世界
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  and one can see the theory expounded on human nature
  我们需要了解这个理论阐述了
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  in which there are four humors,
  人类有四种体液
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  which are phlegm, black bile, yellow bile and blood.
  分别是粘液 黑胆汁 黄胆汁和血
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  And each of those--
  每一种体液
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  also the body is composed of these--
  当然人体就是由它们组成的
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  and each has qualities of as being wet and cold,
  每一种体液有各自不同的性质