above board
光明正大的;公開透明的
正式/書面·形容行為光明磊落
英文釋義
open, honest, and transparent; without deceit or hidden agendas
例句
All our business dealings are above board, so you have nothing to worry about.
典故來源
源自撲克牌游戲,玩家將手放在桌上(board)以示無作弊,象征公開透明。