来自《耶鲁大学开放课程：1600年后西方社会的流行病 第8集 第8集》
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very widespread on the Paris wards,这张图片在巴黎医院的病房里广泛流传 -
where hundreds-of-thousands of每个月有数以千计的水蛭 -
leeches were imported monthly by these hospitals.被医院购入 -
And indeed they discovered also,然而他们确实有了一项发现 -
made a medical discovery,一项医学发现 -
how do you get a leech to bite?即 怎么才能被水蛭咬 -
Well, i can tell you the answer to that.我可以告诉你这个问题的答案 -
What you can do is you can wrap the poor你应该把水蛭 -
thing in a towel and soak the towel用毛巾裹起来 -
in wine or vinegar,然后把毛巾浸到酒或醋里面 -
which irritates it enormously这样做会让它极度疼痛 -
and makes it bite the next thing that it can reach.它会咬任何它接触到的下一个东西