It means that the standard quarantine that aligns with the incubation period, 14 days is often what people talk about, in the conservative picture you might say twice the incubation period length, 28 days for individual quarantine.

这意味着与潜伏期一致的标准隔离，14天是人们经常谈论的， 保守的说法可能是潜伏期长度的两倍，28天的个人隔离。