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And so we'll talk about how that happened in the— using the examples of smallpox and polio.
所以我们会以天花和小儿麻痹症为例,讨论上述目标是如何实现的
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- 来自原声例句
And so we'll talk about how that happened in the— using the examples of smallpox and polio.
所以我们会以天花和小儿麻痹症为例,讨论上述目标是如何实现的
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