past master
近义词：artist，craftsman，
英英释义
Noun
- someone who was formerly a master
- someone who has long and thorough experience in a given activity
例句
用作名词(n.)
- Sally is a past mistress of the art of singing popular ballads.萨莉是演唱民歌的能手。
- Although he had never been a foreman before, he soon showed that he was the master.虽然他以前从来没当过工头，但很快他便显示出是能手。