A TV playback showed exactly what had happened.是什么意思？

A TV playback showed exactly what had happened.

电视播放的录像原样显示了所发生的事.

TV

abbr. television 电视机，total volume 总量，test vehicle 实验用飞行器，terminal velocity 终端速度；

例句
It's no accident that the boom in police series on TV coincided with the decline of the Western.
警匪剧在电视上盛行之时恰好是西部片衰退之际，这并非偶然。

playback

n. 录音重放，录音重放装置，重放；

例句
Your camcorder should have these basic features: autofocus, playback facility, zoom lens...
你的便携式摄像机应该具备以下基本功能：自动聚焦、回放功能、变焦镜头。

showed

v. 给…看( show的过去式和过去分词 )，表现出，显露出，上演；

例句
He showed how the rich and powerful can abuse their position.
他让我们看到有钱有势的人是如何滥用其地位的。

exactly

adv. 精确地，确切地，完全地，全然，恰恰；

例句
'So it's not a family show then?' —'Well, actually, I think that's exactly what it is.'
“那么这并不是一次家庭才艺表演了？”——“嗯，事实上我觉得这恰恰就是一次家庭才艺表演。”

what

pron. （用以询问某人或某事物的词）什么，多少，…的事物；adj. …的（事物或人）；adv. （用于感叹句中）；int. （用以表示不相信或惊奇），（用以表示未听清楚对方说的话）；

例句
How big is the abyss between what you think you are and what you actually are?
你对自己的认识和真实的你之间差别到底有多大？

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

happened

v. 发生（ happen的过去式和过去分词 ），出现，碰巧；

例句
He gave a detailed account of what happened on the fateful night...
他详细描述了那个灾难性夜晚所发生的事。