A very helpful tool to define this dimension is a service classification system.

要定义这个维度，一个非常有用的工具是一个服务分类系统。

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The ability to watch and count system calls is helpful not only for troubleshooting, but also for understanding how application configuration affects performance.

监视和统计系统调用的功能不仅有助于进行故障排除，还有助于理解应用程序配置如何对性能产生影响。

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If children are naturally helpful and sociable, what system of child-rearing best takes advantage of this surprising propensity?

如果孩子天生乐于助人而且善于交际，那么教育孩子的体系从这令人吃惊的倾向性中得到最大的好处是什么呢？

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This tremendously helpful system has all the elements mobile, social, crowd, cloud illustrated in the specific case.

FORBES: Mobile, Social, Crowd, Cloud: Why These Concepts Matter

First in, Last out is not ideal and certainly reform could be very helpful in making the system more responsive and equitable.

FORBES: Ezra Klein on Reforming Teacher Unions

The Attributor system also provides helpful automation for publishers, such as notices to offenders.

FORBES: Attributor: Making Money By Combating Pirated Downloads