It Should Happen to You的意思|示意

It should be remembered that the majority of accidents happen in the home, so you should pay attention to home safety.

不要忘记大多数事故都是在家里发生的，所以应该注意居家安全。

Doing it for yourself is good too, but you should do it for something that you really really want to happen, for really good reasons.

为自己而去做也是好的动机，但是需要是你非常非常希望做的，要有非常好的理由而去做。

Sometimes, you should try to get out there even if you don't feel like it, you never know who you'll meet or what might happen.

有时，你应当强迫自己出行——尽管你可能并不喜欢外出——你不知道下一秒会遇见谁，或者会发生什么事情。

Even though it is not necessarily leakage of the transmission fluid, you should consult the professionally trained technicians if you happen to experience any.

虽然它不一定是输送流体的泄漏，你应该咨询经过专业培训的技术人员如果你碰巧有。

I was so afraid, you know, that something would happen to put it off, and then I should have gone quite distracted.

你知道，我真怕会发生什么意外，把婚期耽搁了，那我可真要发狂了。

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。