unacquainted

形容词 unacquainted:

1. not knowledgeable about something specified
   同义词：innocent
2. having little or no knowledge of
   同义词：unacquainted with, unfamiliar with

1. An official whose duty is to make introductions between unacquainted persons or to precede persons of rank in a procession.
   (给显贵人物)领路的人，前驱职责是为互不认识的人作介绍或在队列中引领重要人物的官员