It's just some random chunk of four bytes that happens to be available at this point in time, but I can put something there.

只是一些随机的四字节的内存块,在这里是可以使用的，但是我可以在那里放置东西。

哈佛公开课 - 计算机科学课程节选

If you haven't seen Law & Order, the way to see Law & order is to go to a random TV set, at a random time, and turn on a random channel.

你要是没看过,随便去找个电视机,在任意时段任意频道都能看到

耶鲁公开课 - 博弈论课程节选