Just to say a little bit about smallpox, because unlike chickenpox, which if you haven't had, you've probably seen a case of it.

我们稍微说一下天花,因为它不像水痘那样,就算你没得过你也见过

耶鲁公开课 - 生物医学工程探索课程节选

s not the burden of your argument that markets work only flawlessly if the government were get out of the way.

所以就算你没说，Ok，so，it’,市场只能在,政府不干预的情况下运转良好。

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