ADJ-GRADED [verb-link ADJwith n]不熟悉…的;不知道…的 If you are unacquainted with something, you do not know about it or do not have any experience of it. 不熟悉…的;不知道…的
Professor Baker is unacquainted with the idea of representative democracy.
贝克教授并不熟悉“代议制民主”这一思想。
I was then totally unacquainted with his poems. [+ with]