unlearned

基本解释

Somewhere throughout the years we unlearned this important trait.
这些年来，我们将这一重要品质忘却在某处。
Knowledge cannot be unlearned, so the best way to oppose the villains is to have lots of heroes on your side.
知识是忘不掉的，所以阻止坏人的最好办法就是在正义一方聚集更多的英雄。
And, perhaps, unlearned as she was, she could have brought a dawning knowledge home to Mr Dombey at that early day, which would not then have struck him in the end like lightning.
虽然她没有什么文化知识，可是她却能够在事情一开始的时候，就让董贝先生了解一些情况，这样就不会在最后像闪电似地使他万分惊愕。

Our financial first responders were feckless, our legislators spineless and our lessons from Katrina unlearned.
NPR: Katrina's Unlearned Lessons Leave Financial Mess
It was as if all the lessons of financial history had been unlearned.
FORBES: One Hell Of A Decade But Dice Have No Memory
No scientist working on India's nuclear programme was under any illusion that bomb-making technology, once learned, could somehow be unlearned.
ECONOMIST: India