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There are still many diseases not (being) understood.括号里的要不要 为什么
人气:206 ℃ 时间:2020-04-04 03:20:40
解答
不要
这句话可以看成
There are still many diseases which are not understood.
而把后面的定语从句缩成后置定语就直接变成not understood
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