尽管给这些传感器增加无线功能使得价钱几乎翻了一番，但这却使安装的费用减少了50 - 90%——而安装费用占总费用的大部分。
Although adding wireless functions to these sensors almost doubles that cost, it reduces the price of installation by 50-90%-and installation makes up most of the total cost.
向外扩展就是在能添加更多服务器来执行同样的功能时，无需中断软件，即可增加应用程序所支持的用户数。
Scale out is when more servers that perform the same functions can be added, without disturbing the software, to increase the number of users supported by the application.
服务器不再只承载简单的超文本链接语言(HTML)这种网络早期通用语言，网页还增加了在浏览器内运行软件的功能。
Servers no longer dish up simple hypertext markup language (HTML), the web's early lingua franca. Increasingly, web pages are bona fide pieces of software that are executed in the browser.
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