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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or just about to have lunch.我就只能说对不住了 -
In any case, first after the incubation period,无论如何 在潜伏期之后 -
there's the pre-eruptive stage.会有个预爆发阶段 -
The virus multiplies in the system在潜伏期后的十二天中 -
for twelve days after incubation,病毒会在人体内大量繁殖 -
and symptoms of disease begin with a viral shower,这时候疾病的一些症状开始连续显现出来 -
as the pathogen is released随着病原体被释放到 -
into the bloodstream and spreads systemically血液之中 进而迅速的通过循环系统 -
throughout the body,在全身扩散 -
localizing eventually in the blood vessels of the skin,最终在表皮层下的 -
just below the superficial layers.皮肤血管之中固化沉降 -
The viral load released, and the efficiency of the随着病毒载量的释放 人体的免疫系统