Definition: not knowing about something Level: B2
他不知道警察在监视他。
He was ___unaware that the police were watching him.
我完全不知道这个问题。
I was completely ___unaware of the problem.
尽管你可能是一个科目的专家，但你可能会不知道其他科目的一些基础知识。
Although you may be an expert in one subject, you can be ___unaware of some basics in others.
