These are often called "never events," because they should never have happened.

这些通常被称为“永不发生的事件”，因为他们本就不应该发生的。

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Surgeons call them "never events," because they are supposed to never happen: things like leaving a piece of equipment in someone or removing the wrong body part.

像在某人身体里留下一块设备，或者移除了不对的身体部位这类事情，外科医生称之为“决不该发生的事”，因为它们本就不应该发生。

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"It's important to keep in mind that these events can and do occur in people who have never taken one of these medicines."

VOA: standard.2010.03.14

Never events are defined by the CQC as serious, largely preventable incidents which should not happen.

BBC: Devon hospitals report serious surgical errors

The Royal Devon and Exeter, Northern Devon Healthcare and South Devon Healthcare trusts each reported two never events.

BBC: Devon hospitals report serious surgical errors

These are the only never events ever reported by the South Devon trust.

BBC: Devon hospitals report serious surgical errors