So a use case is a text description of how you want the system to work, who's involved and how they interact, how it all works when things go right, and what should happen when things go wrong.

因此，用例是关于以下内容的文本描述：希望系统如何工作、将涉及到哪些人以及他们之间如何交互、系统在正常运行时如何工作，以及出现错误时应该如何处理。

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They also have to talk about their process, the tools they used, and give a description of what went right on the project and what went wrong.

他们还必须讲到他们的过程、所使用的工具，并且给出在项目中什么有效、什么无效的一个描述。

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The more accurate description for what business owners and sales professionals often run into is selling at the wrong time, with the wrong product or service, or with the wrong buying triggers.

企业家和销售专家经常提到的更准确的说法则是：在错误的时间，销售错误的产品或服务给错误的人才是罪魁祸首。

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"That is a wrong description of how things were and how things are, " he said, adding that the watchdog now had more than 380 full-time staff.

BBC: Memory stick

Your job description leads you the wrong way, and turns off candidates who could be great but are unlike you.

FORBES: Why Job Descriptions Are A Waste Of Paper

Amjad Malik QC, president of the Association of Muslim Lawyers, said the survey involved "self-description" and it was wrong to think that one in five young males in custody were "practising Muslims".

BBC: Rise in proportion of young Muslims in jail