double standard

set of (usu moral) principles that discriminates against one of two groups, individuals, etc 双重标准（通常指道德方面）: He's got a double standard: it's all right for him to have affairs but not for her. 他采取双重标准: 自己可以有外遇, 女方却不行.

dotted line, dottiness, dottle, dotty, double, double agent, double back, double bed, double bill, double bind, double bluff, double chin, double cream, double date, double Dutch, double entendre, double entry, double figures, double first, double pneumonia, double take, double time, double transitive verb, double up, double-barrelled, double-bass, double-book, double-booking, double-breasted, double-check, double-cross, double-dealer, double-dealing, double-decker, double-dyed, double-edged, double-faced, double-glaze, double-glazing, double-jointed,