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Well, that then says after another 12 steps, 12+12+t we're down to a problem with size t of b over 4.
更进一步，也就是。
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The Hepatitis B subunit vaccine was produced at the same time that HIV-AIDS was being recognized as a problem in this country.
在乙肝亚基疫苗研制出来的同时,在该国家艾滋病开始被视为问题
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Because if b was odd, then b minus one is even which means on the next step, I can cut the problem in half again.
这意味着我在下一步里解决的问题,规模要小了一半，好，课堂材料的第三题。
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I'm going to let t of b be the number of steps it takes to solve the problem of size b.
我会设立一个t作为,计算指数为b的时候解决问题需要的步骤数。
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Well, this is an approach that's been used in a variety of vaccines, most successfully with Hepatitis B, so the problem is where do you get these proteins?
这种方式,已经为许多种疫苗使用,乙型肝炎疫苗是最成功的,但问题是该从哪里获得这些蛋白质呢
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the abuse is, you know, it's not quite right, it depends upon whether it's all ready, but you can see in either case, after 12 steps, 2 runs through this and down to a problem size b over 2.
在12步以后，两轮过后，这个问题的范围b被缩小了一倍，这为什么很不错呢？,这意味着再来12步。
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I've got one test, I've got a subtraction, I've got a multiplication, that's three steps, plus whatever number of steps it takes to solve a problem of size b minus 1.
我进行了一次比较，一次减法，一次乘法，一共是三个步骤,再加上t的步骤数。
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