What I was saying is after you gave your own name, put brackets and then the nickname by which you want me to refer to you.

我刚才说写了你们的名字之后，后面加个括号,写上你们想让我怎么称呼你们。

麻省理工公开课 - 电影哲学课程节选

And so now if you follow the intuition here, percent S is the placeholder, name is what I want to place there.

大家可以凭直觉猜测一下，%s就是这个占位符，为我要填入的名字占位。

哈佛公开课 - 计算机科学课程节选