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。

youdao

A laptop is ideal, but anything with a USB port should work, if you have a CF reader that works under Linux.

最好是一台膝上型计算机，不过如果您有一个可以在Linux下工作的CF读卡器，那么任何带有US b端口的计算机都可以工作。

youdao

Just as with the postal system, I find it fascinating how the whole society works, that people go to work, pay their bills and go on vacation when they should.

就像是邮政系统一样，我发现全社会是如何工作的也是很迷人的一件事情：人们去上班，付帐单，并在合适的时间去度假。

youdao

Hey, if it works for them, it should work for you, right?

FORBES: GLD: King Gold

Elizabeth on the other hand takes the cheap perspective by citing her own personal situation that what works for her should also like magic work for everyone else.

FORBES: Magazine Article

The definition of a derivative work should be tightened to include adaptations while exempting new works that borrow from existing sources.

ECONOMIST: Letters