Obviously we don't expect you to know exactly what the distances are, but you should be able to compare them relatively.

当然我们不要求你么,要能知道具体这些位置是多少，但你们要能够相对比较它们。

麻省理工公开课 - 化学原理课程节选

Yeah, but I think it's also an important skill. You need to be able to express what you know

难，但是我也觉得这是一种重要的技能。你必须能够把你知道的表达出来，

沟通很重要 - SpeakingMax英语口语达人

You know from experience if you've ever mixed them to make salad dressing, they don't mix too well. And you may know that if you heat them up, they mix much better.

经验告诉我们,你无法把它们混合做成色拉酱调料，他们不会很好的混合，但是你也知道,如果我们把他们加热，就能够混合的更好。

麻省理工公开课 - 热力学与动力学课程节选

Right, and just to get a sense of this, let's look at a simple little example, so on your hand-out, you'll see I've got a little piece of code that says assuming I've got one of these points, I want to do things with it, for example I might want to add them together.

这些数组中的一个，你怎么能够知道，它是哪种类型的呢？,你怎么知道它是以笛卡尔坐标,表示的还是以极坐标,形式表示的呢？,你没有可以用来区分的东西，你没有说明这种信息,聚集实际上的意义。

麻省理工公开课 - 计算机科学及编程导论课程节选

You don't even know that you are doing this but you do it quickly and instinctively.

你甚至都不知道自己在理解语言,但你却能够快速且本能的做到。

耶鲁公开课 - 心理学导论课程节选

And sometimes, you know, not knowing a word, it helps you learn it better

有时候，不知道一个单词，却能够帮助你更好地学习它，

紧张是学英语的敌人 - SpeakingMax英语口语达人

You also don't know that they'll give them to the equity owners they won't squander in the future.

你也不知道,他们是否能够兑现股票持有者,它们不会挥霍未来。

耶鲁公开课 - 金融市场课程节选

In order to attend, you must know the date and the time. You can ask your friend, "When is your wedding?"

为了能够出席，你必须知道具体的日期和时间，你可以问你的朋友，“When is your wedding？”

When 课堂 - SpeakingMax英语口语达人

For instance, suppose you want to know if the baby can tell green from red.

比如,假设你想知道,婴儿是否能够区分绿色和红色

耶鲁公开课 - 心理学导论课程节选