Well if I-- you know, with let me say it differently. I don't need to worry about how checking is done, it's handled inside of that function.

好，如果你们知道，抱歉，让我们换种说法,我不必担心检查工作,是则会么做的，这是在方法体内部进行的。

麻省理工公开课 - 计算机科学及编程导论课程节选

If you don't give me seven hours a week, I don't know what I can do for you.

如果你们一周不学习7个小时，我不知道我能为你们做什么了。

麻省理工公开课 - 固态化学导论课程节选

I don't know if you can see, probably not, what's written on here, so let me point out to you a few things.

我不知道大家是否知道，这很可能不是其中的一种，那么让我来为大家指出一些事实。

麻省理工公开课 - 化学原理课程节选

Even if you're like me and you don't know a word of either language, they still sound different.

即使你像我一样,完全不懂这两种语言,它们听起来仍然是不一样的

耶鲁公开课 - 心理学导论课程节选