used to emphasize that a quality or fact, typically a bad one, is well known. "the company is notoriously difficult to contact"
adverb [方式副词]众所周知地,声名狼藉地
Mountain weather is notoriously difficult to predict. 山地气候难以预料是人所共知的。 Predicting the future is notoriously difficult. The local bus service is notoriously unreliable.