be a past master (at something)British EnglishBrEGOOD AT to be very good at doing something because you have done it a lot 擅长[善于，精于]（某事物） He’s a past master at getting free drinks out of people. 喝酒让别人买单他是老手了。
be a past master (at something)• Johnny Morris is a past master at both.• That sort of thing wasn't her style at all, but Susan was a past master at it.
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