And the shorter a bird's incubation time is, the less vulnerable its young will be to predators.

一只鸟的孵化时间越短，它的幼鸟就越不容易受到捕食者的伤害。

With incubation times varying depending on what virus you’re talking about, only time can really tell whether a presymptomatic person will end up having symptoms or not.

潜伏期因病毒种类而异，只有时间才能真正判断未出现症状的人最终是否会出现症状。

And while the incubation time for V. cholerae can take hours, to 2-3 days; severe dehydration and depletion of electrolytes can happen within 4 to 12 hours of the first bout of diarrhea or vomiting.

虽然霍乱弧菌的潜伏期可达数小时至2-3天；第一次腹泻或呕吐后的4至12小时内可出现严重脱水和电解质耗竭。