短语
中文翻译：对某事物一无所知
同义词：
['be utterly ignorant of', 'have no knowledge of', 'be completely unfamiliar with']
例句：
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1. I'venever made either head or tail of this problem.
我从未弄懂过这个问题。
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2.He was so engrossed in his work that he made neither head nor tail of the meeting.
他全神贯注于工作，以至于对会议一无所知。
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3.The teacher explained the lesson thoroughly, but the students made neither head nor tail of it.
老师详细解释了课程内容，但学生们却完全不懂。