The horrors he experienced are imprinted, perhaps indelibly, in his brain.
他经历的恐怖事件在他脑海中刻下了深深的，或许是难以磨灭的印记。
柯林斯例句
The terrible scenes were indelibly imprinted on his mind.
那些恐怖场面深深地铭刻在他的心中。
《牛津高阶英汉双解词典》
There are moments in life that are indelibly imbedded in your mind.
有矩人生有不可磨灭内嵌在你的头脑.
互联网
"this tradition has left its mark indelibly upon the social, political, educational and industrial fabric of this country"