unacquainted
adj. 不认识的；不熟悉的；不知道的
例句
I was then totally unacquainted with his poems.
那时我完全不知道他的诗。
《柯林斯英汉双解大词典》
Tom was at sea—a Great Seal was something which he was totally unacquainted with.
汤姆很茫然——御玺这东西，他根本就不认识。
I am at an unfavourable position in being conversationally unacquainted with English.
我由于不熟悉英语会话而处于不利地位。
《新英汉大辞典》
