There is no machine yet that can recognize faces or understand sentences at the level of a two-year-old human.

至今还没有任何机器,能够做到面孔识别,或是理解两岁儿童能够轻易理解的句子

耶鲁公开课 - 心理学导论课程节选

On one level, there are things like companies that have two . different classes of stock that are economically identical.

一方面，我们有这样的例子，有的公司拥有两种,不同类别的股票，他们在经济意义上是相同的。

耶鲁公开课 - 金融市场课程节选

So at this point in the story-- at this level in the story, if you will, I've touched one, two, three, four numbers total or I've made two comparisons.

那么这时，我总共已经动过了1，2，3，4个数字,或者说我做了两次比较。

哈佛公开课 - 计算机科学课程节选

Their reading ability is at level one or two.

都存在文化素养问题，他们的读写能力很低。

麻省理工公开课 - 媒体、教育、市场课程节选

So let me rephrase, are these people, are these pair of partners in the firm, or two students working on their homework assignments, are they working more or less than an efficient level?

让我换个表达方式吧,这些企业合伙人,或者两个共同协作做作业的同学,他们是否实现了最优效率了呢

耶鲁公开课 - 博弈论课程节选

It's in here to--intended to do two things: One to show you something about the method that we will be using in here and two, to show you something of the level of this course-- the level of the course.

这个测试的目的是,第一,向你展示一些我们的教学方法,第二,告诉你本课程所处的水平,本课程的水平

耶鲁公开课 - 聆听音乐课程节选

We cannot have two 1s's sitting at the same level.

我们不能是两个1s电子同时在一个能级上。

麻省理工公开课 - 固态化学导论课程节选

So we would see resets after two years to a much higher level and some of these people would discover that they can't afford them.

因此我们会看到两年之后,当利率提到一个很高的水平时,其中一部分人会发现他们根本负担不起

耶鲁公开课 - 金融市场课程节选

One, two, three, four, so on each level of the picture I'm drawing, I've seem only to be looking at each number once.

，2，3，4，可见，在我画的,这幅图的每一层上，对每个数字,都只会用到一次。

哈佛公开课 - 计算机科学课程节选