and you lose memory of your entire episodic memory.

你会失去全部的情景记忆
But typically, if you have any sort of serious accident

但通常如果你经历了某种
that involves you losing consciousness

使你丧失意识的严重事故
you'll have a blackout of some period prior to that, say,blow to the head.

你会失去脑部被撞前的一小段记忆
And the reason for this is as you're having these experiences now

原因是当你正在经历某些事情时
they need to kind of get consolidated into your brain.

这些经历需要被记录到你的大脑中
Your brain needs to rewire

大脑需要进行重新建构
and catch up to the experiences you're having.

并将其与你现在的经历同步起来
A sudden blow to the head will knock you unconscious

脑部遭受突然撞击会导致你失去意识
and then the memories that have happened immediately prior

然后发生在撞击之前瞬间的记忆
will not get consolidated

就无法在大脑中保存下来
and they'll be lost forever.

于是就永远丢失了