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I'm gonna keep as part of each stock, it's history of prices, which we can initialize, well, I've initialized it as empty, but that's probably the wrong thing, right?
我会把股票的历史价格，作为每只股票的一部分，我们可以先对它的历史价格进行赋值，好了，我先给它赋了空值，但是这样做可能不对，是吗？
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It's really... it's not right.
这样做是……是不对的。
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He says it's a good idea for people to save for their retirement during their earning years but it's wrong.
他说，让人们在能挣钱的年头为退休而攒钱,社保的初衷是好的，但这样做不对。
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All right? If you run it, you have a sense of the upper bound, about how much time it's going to take to do this computation, so you're not going to get surprised by something showing up.
第一，这样做意味着没有意外了对不对？,你去运行程序,你已经大致知道运行时间的上限了，因此发生任何事情,你都不会吃惊了。
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I kind of thought of what was wrong.
这样做到底对不对。
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Most of those people know they shouldn't.
大多数人知道这样做是不对的
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It still seems wrong in a way that it doesn't seem wrong in the first case to turn, you say.
反正就是不对,而在第一种情况，这样做就是对的，是吧。
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This is a little file I created, all right, and I'm going to start with a sequence of these things and walk them along, again I invite you to put comments on that handout so that you can follow what we're going to do. All right?
这是我创建的一个小文件，好，然后我回去以一系列这样的事情,开始然后进行下去，我还是想大家都在手册上做一些注释,这样我们就能对将要做的事情,做一个记录了，对不对？
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