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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Malta was built on porous, soft limestone,它是坐落在多空柔软的石灰岩上的 -
and that provided infinite air-filled cavities,这提供了很多气孔 -
that if watered and fertilized, in warm conditions,如果在温暖的气候下受潮 -
would provide wonderful places for germination.应该能够为发酵提供一个绝妙的场所 -
You can see Pettenkofer visiting Malta,你们可以看到佩腾科弗走访马耳他 -
which he did, and having his eureka moment.他确实去了 并顿悟了 -
He did core samples.他采集了样本 -
I'm trying to say that Pettenkofer was a very我认为佩腾科弗是一个认真尽责的科学家 -
conscientious research scientist, and a strong epidemiologist.也是一个厉害的流行病学家 -
And he went further.他研究地更加深入 -
He argued also that he could explain not only which cities他不仅可以知道哪些 -
were most afflicted by cholera,城市更容易感染霍乱