The Unknown As we know,
There are known knowns.
There are things we know we know.
We also know There are known unknowns.
That is to say We know there are some things We donotknow.
But there are also unknown unknowns,
The ones we don't knowWe dont know.
谁有这段拉姆斯菲尔德的视频或是音频的东东呀
好想听听
好想自己可以说的很流利
希望大家能够帮忙告诉我
As we know, there are known knowns.There are things we know we know. We also know there are known unknowns. That is to say,we know there are some things we do not know. But there are also unknown unknowns - the ones we don't know we don't know.
谁能告诉我这句子的意思呀
请不要从网上的在线翻译给我翻译这句