扩展和收缩非常快速且便捷，这为工程师和开发者带来了更多扩展和高可用的选择。

Scaling up and scaling down is fast and efficient, allowing a developer or release engineer multiple options for scaling and high availability.

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一个掌握了便捷联系方式的执行官可以使用网上声讯服务去拨打任意数量的免费电话。但是对于贫苦的农民，即使他们有电话的话，也要付高费用。

The well-connected executive can use any number of voice-over-internet services to make free calls; but the rural poor, if they have phones at all, must pay high rates.

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对于公司商务机私用，公司给出的三个常见理由是：为高管安全着想、董事会授权，还有一个单纯的原因——便捷。

The three most common reasons given by companies for personal use of the corporate jet are: executive security, board mandate, and, quite simply, convenience.

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