conversant
adjective formal uk/kənˈvɜː.sənt/ us/kənˈvɝː.sənt/
be conversant with something 对…熟悉，对…精通
to be familiar with, and have knowledge or experience of the facts or rules of something
I'm not conversant with the rules of chess. 我不熟悉国际象棋的规则。
Synonym: familiar