While your personal computer only keeps one copy of a file, large-scale services like Facebook rely on what are called content delivery networks to manage data and distribution.

虽然你的个人电脑只能保存一个文件的一个副本，但像 Facebook 这样的大型服务项目，则会依赖于所谓的内容分发网络来管理数据和分发。

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We can't really tell you which distribution you should be using, for a couple of reasons; it really all depends on your personal preferences, and what you want to get done.

基于很多的因素，我们无法告诉你该选择哪个分发版，这完全取决于你的个人经历，和你想用来做什么。

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The invention of the printing press meant that many copies of a document could be produced more quickly than before, but distribution still relied on personal connections.

新闻印刷的发明意味着许多文件的抄录本比之前能够更多更快的生产，但是纸质新闻的分发一直依靠人力。

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Shopping with a mobile device or a personal computer is now indisputably one of the primary forms of retail distribution.

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These include cholesterol checks, eye exams, employment counseling, clothing distribution, benefits claims assistance, PTSD and trauma screening, personal care items and meals.

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In addition, consumers concerned about online privacy may not like the new standard, called New Distribution Capability, since it gives airlines another venue for collecting their personal information.

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