They believe that educated readers should already know where the information came from.

VOA: special.2009.04.16

But we know already from week zero that computers ultimately represent all information with numbers, and if they want to represent letters inside memory, well what do they do or what do they use?

但是自从上周我们已经知道,计算机最终是用数字来表示所有的,信息，如果它们要描绘,在内存中的字母，它们该怎么做，用什么方式呢？

哈佛公开课 - 计算机科学课程节选

I mean, there are lots of students in my year, students that I know that they are already pretty successful

许多学生在我这个年纪已经非常成功了，

我喜欢的教授 - SpeakingMax英语口语达人

Chapters 2 and 4 are really reviews of things that you probably already know something about, so they're reviews of basic chemistry.

第二章和第四章是对,一些你可能已经知道的,基础化学,蛋白质及生物化学知识的复习

耶鲁公开课 - 生物医学工程探索课程节选

In some ways they kind of feel like, "Okay,I know what the New Testament is, and I already know sort of what I think about it."

某种程度上，他们可能会觉得，“行了，我知道新约是什么，也知道我对它的看法“

耶鲁公开课 - 新约课程节选

So C or the compiler's for C are kind of dumb, by definition of the language years ago, whereby, they only know about what they've already seen.

所以C或者C的编译器是有点愚蠢的，根据多年前这个语言的定义，凭借那个，他们只知道,他们所看到的。

哈佛公开课 - 计算机科学课程节选