Soon after Call and Caroline were married, the Captain said to me, "This is hard for you,isn't it?What is it you really want to do?"

VOA: special.2009.02.14

So this is going to be review still again, and for those of you for whom it isn't review don't worry.

那么就当作是复习了,那些之前没有学过的同学也不用担心

耶鲁公开课 - 博弈论课程节选

It isn't necessary for you to grasp his occultism in order to read his poetry well.

但这不是必要的,没必要去理解他的系统,不理解系统也可以读他的诗。

耶鲁公开课 - 现代诗歌课程节选

Well in C and other languages that we'll see this semester, you use what's called the for loop, and this as syntax isn't quite as straightforward but once you know what to look for, it's very easy to understand.

在C语言和一些我们这学期将要接触的编程语言中，你将会用到所谓的for循环，也许作为一种语法规则，它看起来不是那么的通俗易懂,但是你一旦知道曲中奥妙，就不难理解了。

哈佛公开课 - 计算机科学课程节选