来自《耶鲁大学开放课程：1600年后西方社会的流行病 第13集 第13集》

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  considered variations in the water table beneath the city to
  因为他考虑到了城市地下水的许多变量
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  be a measure of the capacity of a soil beneath the city to
  来计算城市地下土壤的容量
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  support fermentation and give rise to cholera epidemics.
  以此支持他的霍乱发酵说
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  Too high a water table would be like flooding,
  过高的地下水表就像洪水
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  and that would kill the plant.
  会溺死植物
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  Too low a table would be like a drought or a desert.
  地下水表过低就像干旱或沙漠
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  So, for a cholera epidemic, the ideal was an ebbing water
  因此对霍乱来说 理想的水位是
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  table that left moist, porous soil above it;
  能形成湿润和多空土层的水位
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  a condition that was likely to be characteristic of the early summer.
  这是初夏的气候才符合的条件
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  And indeed, Pettenkofer now thought
  因此佩腾科弗认为
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  he understood the seasonality of cholera.
  他搞清楚了霍乱季节性的原因
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  He could explain its seasonality by reference to the
  他可以用欧洲和其他城市的