translation.en: Now, when you get a viral infection, what normally happens is it takes days or weeks for your body to fight back at full strength, and that might be too late.
translation.zh: 现在，当你病毒感染了， 一切正常运转的是它会用几天或者几周的时间 为你的身体奋力还击， 它们会全力以赴去做。 也许这太晚了些。