来自《耶鲁大学开放课程：1600年后西方社会的流行病 第6集 第6集》
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vaccines form an appropriate strategy--接种形成了一个策略 -
and eradication has been ever more elusive然而根除天花以外的疾病 -
for diseases other than smallpox.变得困难 -
It may be that smallpox is a special case,也许是因为天花是一个特例 -
rather than, as many hoped,而并不是像我们所期待的 -
a model for the eradication of diseases sequentially,天花是根除一个又一个疾病的 -
one after another.典范 -
We'll be looking also at smallpox because of its我们了解天花还在于它对 -
demographic and economic effects.人口和经济影响 -
We talked, in terms of plague, of a mortality revolution,在讲瘟疫时我们提到 -
in terms of demography,人口的剧变 -
and also of its impact on industrialization.和对工业化的影响