For now, just know that different kinds of cells, one of the ways they're different is that they express different proteins and the population of proteins on the surface of different cells is different.

现在,你们只要知道有不同的细胞,它们之间的一种区别,就是它们表达不同的蛋白,而不同细胞表面的蛋白种类,也是不同的

耶鲁公开课 - 生物医学工程探索课程节选

Well,at first glance,you might think the answer is, look,you exist,you're alive,whatever it is--; as I said,I'm just going to be loose now, I'm going to put aside all the careful distinctions I just drew-- I'm still around as long as my body is P-functioning.

一开始，你可能会觉得答案是这样，你存在就是存活，无论;,我现在稍微放松一点规定，我要把刚才提出的区别放在一边-,只要我的身体还有人格功能我就是活着的。

耶鲁公开课 - 死亡课程节选