a person who is very good at something because they have a lot of experience in it 老手；内行；专家 Director Mel Smith is a past master of this kind of comedy. 导演梅尔·史密斯（Mel Smith）曾经是这种喜剧的主人。 - past master at doing something
She's a past master at getting what she wants. 她可是个老练的人，想要什么就能得到什么。 🔊🔊 - past master at something
They are past masters at this game. 他们是这场比赛的高手。