Definition: a case/event/example, etc. that happens only once Level: C2
这个软件漏洞是一个孤立事件。
The software bug was ___an ___isolated ___event.
这个错误是我们记录中的一个孤立例子。
This mistake is ___an ___isolated ___example in our records.
我们希望这次失败是一个孤立案例。
We hope this failure is ___an ___isolated ___case.
