As division happens and the developing organism acquires more and more cells, individual cells become differentiated, they become more and more like their final mature form.

分裂过程不断发生,以及发育中的有机体对更多细胞的需求,细胞个体便逐渐分化,它们越来越接近成熟细胞的样子

耶鲁公开课 - 生物医学工程探索课程节选

That's just an example of a cell that in its very mature or differentiated form is quite different from other cells inside the body.

以上就是一个,分化成熟的细胞,区别于体内其它细胞的范例

耶鲁公开课 - 生物医学工程探索课程节选