Special equipment has been installed so that Olympians can rely on sight to know when to go and when to stop.

VOA: standard.2009.09.10

So it does that for us so that you can get away with just knowing the address of the first byte and it will make sure that you know when to stop by including the special value so, in fact, get the string if you type in a three-letter word, we allocate four bytes no matter what because we need an additional byte 0 for this special sentinel value back slash zero at the very end.

它为我们做了这些事情，这样我们就可以,通过第一个字节的地址,它还可以通过包含一个特殊的值,来保证在哪里停止，如果你输入了一个三个字母的单词,就可以获得那个字符串，不管怎样，我们分配四个字节,因为我们在末端需要一个额外的字节,来保存这个特殊的标志值--反斜杠。

哈佛公开课 - 计算机科学课程节选

Now this is when I want to stop for a second and I know that some of you, from past experience, are somewhat math phobic.

现在我们暂停一下,根据之前的教学经验,我知道有些人有数学恐惧症

耶鲁公开课 - 博弈论课程节选