fair play
noun [ U ] uk/ˌfeə ˈpleɪ/ us/ˌfer ˈpleɪ/
按规则比赛；公平竞争
in sport, the fact of playing according to the rules and not having an unfair advantage
C2 UK公平待遇，均等条件
fair and honest treatment of people
The committee's job is to ensure fair play between all the political parties during the election. 委员会的任务是确保选举期间各政党之间公平竞争。