Then you see way back in human histories figures like this where people had to go hunt for their food, and of course there was danger involved in this.

让我们回到人类演化史上,如这张图所示,人们不得不去狩猎觅食,当然,这是非常危险的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

That's what this picture on the bottom shows you here.

如底下这幅图所示

耶鲁公开课 - 生物医学工程探索课程节选

This is just a picture of that little box, so it's going to turn out it goes from, the pink line goes from here to here and the blue line goes from here to here.

这是那个小方格的放大图,这些线如图所示,粉色的线从这一点到这一点,蓝色的线从这一点到这一点

耶鲁公开课 - 博弈论课程节选

What happens during mitosis is that the cell is able to separate this double set of chromosomes into two sets and that happens in a way that's shown in this cartoon here.

当细胞有丝分裂时,细胞将其分开形成两组染色体,如下图所示

耶鲁公开课 - 生物医学工程探索课程节选