Most number systems, then, are the by-product of two key factors: the human capacity for language and our inclination for focusing on our hands and fingers.

因此，大多数数字系统都是两个关键因素的意外结果：人类的语言能力及我们对手和手指的关注倾向。

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A document stored in two different content management systems might be created by the same application and, indeed, might have the same number of bits (a PDF file, for example).

存储在两个不同内容管理系统的一个文档可能由同一个应用程序创建，可能还有相同的比特数(例如，一个PDF文件)。

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With each new class, the volume shrinks by two orders of magnitude and the number of systems per person increases.

贝尔定律则说，每十年便会开发出一代新型的更小、更便宜的电脑。 每一代新电脑的体积以两个数量级下降，而人均拥有的系统数量增加。

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While these systems offer a number of advantages for time-critical two-way communications, they are expensive and limited if you need wide-area coverage, especially across a country or continent.

FORBES: Connect

In nearly two decades of success in European football, Capello has employed a number of different systems - but Leonardo believes that the classic 4-4-2 system was the one that worked best when he was at Milan.

BBC: How Capello's England will look