But it turns out that because the Standard I/O Library is -lstdio so common they don't force people to type this all day long because it's just so commonly used.

由于大家都会用到标准输入输出库,因此我们不要求每次都在后面添上,可以省略。

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

Suppose I type in the word foo, F-O-O.

假如我输入了单词foo，F-O-O。

哈佛公开课 - 计算机科学课程节选