24小时新闻、电子商务、移动电话、全球定位系统，所有这些都正在使世界变得更小、发展得更快。

Twenty-four-hour news, e-commerce, mobile phones, Global Positioning Systems, all these are making the world smaller and faster.

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反过来，这可能传播错误，使定位问题的源头变得困难。

This, in turn, can propagate the error, making it difficult to locate the source of the problem.

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其次，重新定位相机（仍按住快门按钮），使拍摄对象不在中央。

Second, reposition your camera (while still holding the shutter button) so the subject is away from the center.

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Well, turns out that with arrays, not to make this too trippy too soon, but Arg V bracket something is a string, you can also use square bracket notation to go to a specific letter in a string, because little teaser a string is just an array.

好的，结果用那个数组，不要使这个很快引起幻觉，但是Argv什么的，是一个字符串，你也可以用方括号定位到,字符串中的一个特定的字母，因为一个字符串只是一个数组。

哈佛公开课 - 计算机科学课程节选