NULL Maybe it's really close to the number zero to null and, therefore, I'm absolutely going to crash.

可能它很接近数字，因此，程序绝对将崩掉。

哈佛公开课 - 计算机科学课程节选

oh hi null This time I did nothing and so it just said oh, hi null.

这次我什么都没做，然后就显示。

哈佛公开课 - 计算机科学课程节选

So that vector is called a "Null vector."

这种矢量就叫做"零矢量"

耶鲁公开课 - 基础物理课程节选

Only the operating system has controlling of byte zero NULL in the computer's RAM and so if a function ever returns null, aka zero, well, something must have gone wrong because that can't possibly belong to me that memory because by human convention zero is owned by the operating system; not by a program I wrote.

只用操作系统在内存中能够控制,字节0，并且如果一个函数返回，或者说0，好的，可能出错了,因为那可能是不属于我的内存,因为惯例上，0是由操作系统拥有的,而不是由我的程序拥有的。

哈佛公开课 - 计算机科学课程节选

NULL If a get string returns null, that pretty much means something went wrong and there are a few things that could go wrong.

如果GetSting返回，大致上表示的是出错了,这里有几种出错的地方。

哈佛公开课 - 计算机科学课程节选

It's very clear that if you want to take A and ask, "What should I add to A so I get the null vector?"

显然,你们会拿 A 来问,"拿什么来加矢量 A 可以得到零矢量呢"

耶鲁公开课 - 基础物理课程节选