And most important, in our skin, where they lie in wait as stealthy sentinels should microbes breach the leathery fortress of our epidermis.
And most important, in our skin, where they lie in wait as stealthy sentinels should microbes breach the leathery fortress of our epidermis.
最重要的，它们就在皮肤里，静静守候一如秘密岗哨，等待微生物穿越表皮这层堡垒。