In this case, I'm going to get back the answer 3 F-O-O because the user typed in F-O-O, but wait a minute, what's with this?

假若这样，我得到了答案3,因为用户输入了，等一下，用这个干吗？

哈佛公开课 - 计算机科学课程节选

This refers--this actually goes back to B.F. Skinner, a psychologist who flourished in the first half of this century.

这要追溯到B.F.斯金纳,一位活跃在上世纪前期的心理学家

耶鲁公开课 - 金融市场课程节选

Once you got a = 2, you can go back and realize here that f = 4, so you got really 4 Newtons.

一旦你算出 a = 2,你可以回到上面来,求出 f = 4,所以实际上这个力有 4 牛

耶鲁公开课 - 基础物理课程节选

F-O-O in lowercase and, in fact, foo it is buggy because I typed lowercase F-O-O and FOO yet I get back capital F-O-O as both the original and the copy and that's simply because I haven't done this correctly.

小写的f-o-o，实际上，它是有bug的，因为我输入小写的,而我得到的原始的和拷贝的都是大写的,简单说，我处理错了。

哈佛公开课 - 计算机科学课程节选

f-o-o If I type foo, I'll get back F-O-O.

如果我键入foo，我将取回。

哈佛公开课 - 计算机科学课程节选