So what we want to do, is, I guess another way of saying it is, efficiency is really about choice of algorithm.

因此我们想做的就是，换种说法，效率实际上是算法的选择，我们想要培养你们。

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I want to--another concept-- I guess I've just been implicit in what I have-- There's a distribution called the normal distribution and that is--I'm sure you've heard of this, right?

另一个概念...,刚才这些我都讲明白了吧...,有一个分布叫正态分布,大家有所耳闻吧

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Now let's go on to another thing that we'll want to be doing here and that I guess is taking a little bit of rhythmic dictation, writing down some simple rhythms.

现在咱们来做另一件事,我觉得咱们得做点节奏的听写,写下一些简单的节奏

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Another little pop quiz here, and these aren't trick questions necessarily, but if you had to guess what the bigger problem was in the developing world, so let's not just say outside the U.S.

我们再做一个小测试,这不是什么难题,你们猜猜,发展中国家面临最大的问题是什么,我们所说的不是美国以外的国家

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