The horrors he experienced are imprinted, perhaps indelibly, in his brain.
他經歷的恐怖事件在他腦海中刻下了深深的，或許是難以磨滅的印記。
柯林斯例句
The terrible scenes were indelibly imprinted on his mind.
那些恐怖場面深深地銘刻在他的心中。
《牛津高階英漢雙解詞典》
There are moments in life that are indelibly imbedded in your mind.
有矩人生有不可磨滅內嵌在你的頭腦.
互聯網
"this tradition has left its mark indelibly upon the social, political, educational and industrial fabric of this country"