英文作答,关于cell
问题描述：
英文作答,关于cell
Kevin is a healthy boy and a lot of cells are worn out and rubbed off from his skin every day.Explain why his skin can still function well.
答
Because when a lot of cells worn out,more new cells grow to form new skin and continue the function.It's a normal phenomenon that some of cells of a healthy person die every.It doern't indicate that p...