know nothing about utterly ignorant 一窍不通 They know nothing about us 他们对我们一无所知 ; 一无所知 I know nothing about it 我对此一无所知 ..
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相比于美国人的高谈阔论，他们对我们核项目的状况根本一无所知。
The Americans, contrary to their tall claims, were totally in the dark about the status of our program.
比尔·盖茨和史蒂夫是我们这个时代最伟大的企业家，可是他们刚开始的时候对商业也是一无所知。
Bill Gates and Steve Jobs are among the greatest entrepreneurs of our time, and they didn't know anything about business when they started.
到目前为止，我们对他们的海外市场战略一无所知。
So far we don't know anything about their overseas marketing strategy.
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