One of the reasons why you would want to segregate things into certain regions is that molecules have to move in order to accomplish these things; molecules have to move from one place to another.

将细胞功能定位于某个固定区域的,另一个原因是,生物大分子需要移动,以完成某些功能,分子从一个地方移动到另一个地方

耶鲁公开课 - 生物医学工程探索课程节选

And so when you start to poke around the puzzle pieces, you see that it can say things, we'll see movement in just a moment and sound and so forth, but at the end of the day, this is just like the program we used a moment ago for the sock exercise where we just hold Philip a step after step after step, do this, do this, do that, and yet, here too, we already see an opportunity for that thing we called the loop.

如果你认真看下这些拼图，你会发现它都是一些移动，并发出声音的功能块,就像我刚才的,练习程序一样,我们让飞利浦做这个动作，做那个动作，跟这里的情况一样，我们已经看到了称为循环的东西。

哈佛公开课 - 计算机科学课程节选