Furthermore, you can see how and where a higher-level process activity sends a feedback message to a lower-level activity, or vice versa.
而且,还可以看到较高级别的流程活动如何以及从何处向较低级别的活动发送反馈消息,反之亦然。
A real program would have a usage message and provide some sort of feedback if the user didn't specify at least one argument, but I've left that as an exercise for the reader.
一个真正的程序应该具有使用方法消息,并且在用户没有指定任何参数时,提供某种形式的反馈信息,但我把这项内容作为练习留给读者。
I use networking to get feedback and information so I can hone my message.
我用人际网获得反馈及信息,以此来使我的信息更加有力有效。
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