fair and square
公正地,光明正大地
口语·强调行为公正无欺
英文释义
fair and honest; in a just and equitable manner
例句
He won the game fair and square, without any cheating.
典故来源
源于16世纪,'fair'表示公正,'square'表示正直,两者叠加强调完全诚实公正。