They evolve to become very dense, hard, pustular lesions, which are filled with what turns out to be tissue debris.

它们逐渐变成粘稠,发硬,产生脓包状的伤痕,而这些粘稠的脓事实上是组织残骸

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And this fluid eventually starts to leak out and those lesions would heal, but they leave scars in most cases.

这些液体最终会流出来,伤痕也会痊愈,但大部分情况下会留下疤痕

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So these are just some pictures to show you what the smallpox lesions look like on the face of a child, and then distributed over the whole body of an adult, to give you some better idea of what kind of a disease this was.

所以这里给你们展示一些图片,这就是小孩脸上的天花伤痕,这是天花遍布成人全身的样子,它能让你们更好的理解,天花是一种什么样的疾病

耶鲁公开课 - 生物医学工程探索课程节选