How to say “They preserved the original recording, so we can still check exactly what was said.” in Japanese
In Japanese
元の録音をそのまま保存してあったから、何て言ったのか今でも正確に確認できるよ。
Moto no rokuon o sono mama hozon shite atta kara, nante itta no ka ima demo seikaku ni kakunin dekiru yo.