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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so that they excavated and they found the human remains,

考古队挖掘并找到了人类的残骸，

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