past master
n. 能手(前任主持人)
例句与用法:
She's a past master at the art of getting what she wants.
她想要什麽就能得到什麽,堪称一绝。
Henry is a past master at bridge.
亨利是打桥牌的高手。
ph.
对某种技艺有丰富经验者