known unknowns meaning in English

已知的未知数

But his unknowns are known unknowns , to borrow a phrase from his enemy , mr rumsfeld
但是，借用他的敌人拉姆斯菲尔德先生的一句话：他的无知是已被知晓的无知。
We also know there are known unknowns ; that is to say we know there are some things we do not know
同时，世上还存在着我们不知道的不明事物，也就是说我们不知道自己不知道。 ”
This central “ known unknown ” means that all the subsequent big questions are much harder to answer
这一关键的“已知不确定性因素”意味着，所有随之而来的大问题都更难以回答。