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So let me go back up here, and I'm going to comment out that region, and let's uncomment this region.
那么让我们回到这里，我会为这个区域添加注意，让我们先取消注释。
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On the right hand side, the work, let's call this left hand side, let's call this right hand side.
在右手边，让我们先在这里,标下标表示左手，这里示右手。
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Let's do selection and let's do merge sort here on the right just to see what actually happens.
中间进行选择排序，右边进行归并排序,看看会发生什么。
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So if I call, let's , let's set up s to be, I don't know, some big long list.
那让我们来调用一次吧，让我们建立一个，怎么说。
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So let's actually let you try another example of solving a problem that has to do with one of the spectrums.
下面请大家来看一下另一个例子,这次是一个需要大家解决的关于光谱的问题。
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It was nice because it wasn't just, "Okay, Let's write a story" or "Let's do a research about the animal" or "Let's do a poem about fish".
说它出色，因为孩子们这样做，不是因为老师要求“,或布置的任务“,或学校强制。
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Now let me remind you that they're going to be grading many of your things, so let's give them another hand.
我要提醒大家,成绩评定的工作大多由他们完成,所以请再次热烈鼓掌
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Finally, let's do it in green, let's look at the payoffs, the expected payoffs if I shoot to the right.
最后,用绿线来表示吧,我们来看看我从右路射门的预期收益
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The disease model,the optimum level is the zero: let's just be Ok; let's just not hurt.
对疾病模型而言，最优水平是零：,我们都平平安安，别受伤就好了。
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Let's take a look inside that tube. Let me redraw it.
我们来看看管子的内部，再重新画张图。
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So let's listen to just a little bit more and I think--Well, let's listen.
让我们再多听一点,我认为,我们还是先听一下
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Let's imagine maybe instead we just immediately dropped the pressure let the system expand against the lower pressure.
现在假设,我们很快地降低压力,让系统在低的外压力下膨胀。
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So, let me go had and let's swivel this around for just a moment so we have a blank slate and now what's really going on?
我把它旋转一下,这样就有一块空白了,到底发生了什么呢？
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All right. So let's think about how to draw the oh, actually, let me let you tell me how we should start this Lewis structure.
好，那么我们来想一想应该怎么画,噢，实际上，我想让大家来告诉我,我们应该怎么开始画这个路易斯结构。
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I've got to say, we've got to do this more often Right. Let me, let me get to the point.
我必须说，咱们得经常这么干,好，让我，让我说重点吧。
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So let's just to see how you run through some of those calculations. Now let me just ask who here took 5.111? And who here took 5.112?
那么让我们看看怎样,推导这些反应，现在让我问一下,这里有谁学过5。111？谁学过5。112？
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