FIND OUTto make known the hiddentruth about someone 揭露,揭穿〔真相〕
He was one of the most high-ranking spies ever unmasked by the CIA.
他是中央情报局所揭露的最高级别的间谍之一。
Examples from the Corpus
unmask• As glucoseconcentration falls, severevolume depletion may be unmasked.• It is also through observation that fakes are unmasked.• Perhaps we're in the middle of a nest of spies whom Meredith-Lee was about to unmask.• She needn't have worried about Lori being unmasked.• He was said to be one of the highest-placed spies unmasked by Sovietintelligence in recent years.• And surely J.H. Hodges should have been unmasked earlier.• Only by unmasking the killer can she hope to free herself from the terror.• The CIA succeeded in unmasking the spy who sold military secrets.