We'll start off with something simple, then we'll do something different.

我们将要以一些简单的事开始，之后去做一些不同的事。

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So if I start off with a list of length n, how many times can I divide it by 2, until I get to something no more than two left?

我能够除以多少次2呢？,直到我得到的长度不超过2么？,对数次，对吧？就像刚才那位同学说的那样？

麻省理工公开课 - 计算机科学及编程导论课程节选

To produce an image, you need to start off by building a life-like model, no mean feat with something as intricate as a fly or an ant.

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