可能每个有移动设备的人在喝咖啡，在火车上，在一个购物中心或酒店时，都曾经登录过不用付费的公共无线网络。

Probably everyone with a portable device has once logged on to a public WiFi network without paying for it, while they are having a coffee, on a train, in a shopping mall or at a hotel.

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客户有两个选项，要么投入大量资金升级网络容量，或停止以“主动/主动”方案运行数据中心。

The customer was left with two options, either to invest in a significant upgrade of network capacity, or stop running the data centers as Active/Active.

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虽然这里有几百家公司提供云服务，基于网络，依托与数据中心的服务，比如音乐或者社交网站。

Granted, there are hundreds if not thousands of firms offering cloud services-web-based applications living in data centres, such as music sites or social networks.

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