But in fact, if you just run your fingers again and again over this floppy disk you are disorienting those particles or knocking them off perhaps altogether, depending on the medium.

事实上，如果你把手指一次次的在磁盘上面滑动,这些粒子就会变的无极性,或者把它们整个搞坏，而这取决于媒介。

哈佛公开课 - 计算机科学课程节选

What you'll notice very delicately is that there's not all that much to this so called floppy disk.

你会注意到这种称之为软盘的东西,现在已经不怎么存在了。

哈佛公开课 - 计算机科学课程节选

Good question, so what happens when you format a floppy disk or format a hard drive?

好问题，当你格式化一个软盘,或者硬盘时会发生什么呢？

哈佛公开课 - 计算机科学课程节选