These links resolve the errors in the diagram, but this arrangement would not work in a real system due to the multiple port usages.

这些链接会解决图表上的错误，但是该安排因为多个端口使用问题的存在于实际的系统中不会发挥作用。

youdao

We can't have a "real" system without them, but we'll create them when we need them, not before.

没有它们我们就没有“真正”的系统，但当我们需要时我们才会创建它们，而不是事先创建。

youdao

The modified date has no real meaning for a contact in the real world, but is a function of how the model is used, tracked, and persisted in the system.

在真实世界里，对一个联系人来说“最近修改时间”可能没有什么真正的意义，而只是一个模型在系统中怎样被使用、跟踪、持久化的功能而已。

youdao

Defense companies may think that their customers are military services and intelligence agencies, but the real customer is a political system that can change its mind about priorities overnight.

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"You may have a very sophisticated system but the real test is how that ultimately leads to timely evacuation and actionable information, " Vatsa said.

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The company also ensures that phone calls are not answered by a system, but by a real human being every time.

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