ignorant ·adjective
Definition: not having enough knowledge, understanding, or information about something Level: C2
她是一名政坛新人，对许多议会程序一无所知。
She was a rookie politician and ___ignorant of many parliamentary procedures.
许多人仍然对气候变化的长期后果一无所知。
Many remain ___ignorant of the long-term consequences of climate change.
他发表了一番无知的评论，暴露了他对历史的完全缺乏了解。
He made an ___ignorant comment that revealed his complete lack of historical knowledge.