KNOW somethingif someone is cognizant of something, they know about it and understand it 知道的,认识到的,了解的
cognizant of
He was cognizant of the peculiarities of the case.
他认识到了此案的种种怪异之处。
Examples from the Corpus
cognizant• I'm cognizant of the fact that your client has tried to pay the debt.• And so, um, he was very cognizant of what he was doing and why he did it.