But of course, if you were a simple perceptual creature, you would just see that there'd be a bar on top and a bar on the bottom.
如果你只是个拥有感知的简单生物,你只会看到在顶端和底端分别有一根木杆
The question was how many rabbits do you have at the end of a year? At the end of two years? At the end of more than that number of years, and so. We can do this with the following level definition. We're going to let pairs of 0, the number of pairs at month 0, actually it would not be it would be 1.
在下一个月末的时候让我们假设,这2只小兔子也有了后代,同样是一公一母,问题是一年后你会有多少只小兔子?,两年后呢?更多年后呢?,我们可以用接下来的等级说明来解释,在第0个月有0对兔子。
So we strategized and we thought s a way of just generating these PAX2 expressing cells.
于是我们想,是不是有一种只生成,maybe,there’,这种PAX2表达细胞的方法。
There's five because there's one of these that's particular to RNA only, that appears in only RNA, and there's one of them that appears in only DNA.
有五种是因为,一种为RNA所专有,它只出现在RNA中,另外有一种仅出现在DNA中
There are hundreds,thousands of them known now, and each one has a specific character and one aspects of its character is that it only binds and cuts at a particular sequence of DNA.
已知的有成百上千种,每一种都有自己的特性,特性之一是,只结合和切割特定的某一种DNA序列
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