freak accident

基本解释

Instead of breaking into showbiz, I broke my hip in a freak accident.
在我打入娱乐圈之前，我先打破了自己的屁股，那是一场怪异的事故。
The pile up of cars on the motorway yesterday was a freak accident caused by a combination of icy roads and fog。
昨天高速路上发生的连环撞车是一场罕见的意外，因为当时道路结冰了，而且又有大雾。
edu.sina.com.cn
In our own experience, Zotero updates have never been a problem, but the data you have saved in Zotero so far is probably something you don't want to lose due to a freak accident.
在我们自己的经验里，Zotero的更新从来都不会是个问题，不过你存到目前的Zotero资料可不会是你希望在某种特殊意外中遗失的部份吧。

Occasionally he imagines her falling victim to a freak accident—a tumbling crane, say, or spiralling helicopter.
ECONOMIST: The life and words of Mr Peanut