新闻分析：安卓是全球数一数二的操作系统，但是它并不完美。

News Analysis: Android is the world's top mobile operating system, but it isn't perfect.

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五次温网冠军的信心正在丧失，而塞雷娜的发球依然完美无缺，将Ace数改写为12个并取得5 - 2的领先。

The confidence appeared to be draining out of the five-time champion, while Serena continued to serve faultlessly, taking her tally of ACES to 12 and opening up a 5-2 lead.

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特殊形状的手柄和功能软防滑手柄-为追求完美的板左右的人士过去数豌豆。

The handles are specially shaped and feature a soft anti-slip grip - perfect for chasing those last few peas around the plate.

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OK, once it gets to the end of that, what's it going to do? It's going to come down here and, oh. What's that doing? Well I cheated when I started. I said, somebody's giving me a perfect square, I'm looking for the square root of it. But suppose 15 I gave this thing 15, and asked it to run.

好，一旦到了循环的最后，程序会去做什么？程序会跳到这里来,噢，这是干什么的？好吧,当我开始的时候我有点小作弊的意思,我说过，我得到了一个完美的平方数,我要求这个数的平方根,但是假设下我得到的数是。

麻省理工公开课 - 计算机科学及编程导论课程节选

I'm given an integer that's a perfect square, and I want to write a little piece of code that's going to find the square root of it. All right so I'm cheating a little, I know it's a perfect square, somebody's given it to me, we'll come back in a second to generalizing it, so what would the steps be that I'd use to walk through it?

完美平方数的整数，我想写一段代码来求这个数的平方根,好，我这儿有点儿作弊了,我知道这是一个完美的平方数了,他们给我的，我们后面会讲怎么产生这个数的，那么我想解决这个问题,需要什么步骤呢？

麻省理工公开课 - 计算机科学及编程导论课程节选