事故发生时，这架单引擎飞机正在离地几英尺的空中悬停准备降落，此时遇到了阵风。

The mishap occurred when the single-engine aircraft was caught by a gust of wind while hovering a few feet above the ground before landing.

youdao

你在一起意外事故中受了伤而为此埋单$20K；到了十年之末，你终于需要用新瓦修缮房顶；发现你儿子那一口 牙需要用矫正器。

You are injured in an accident and rack up $20k in hospital bills; this is the year out of the last ten that you finally need new shingles on the roof; you find out your son needs braces.

youdao

所以，还是每个的设计基础事故都会，有一个组件的单失效，那基本上，就是单失效的标准。

So, again each design basis accident has one single failure of a component which basically is the single failure criteria.

youdao