fair play

Từ điển Oxford Advanced Learner 8th

ˌfair ˈplay [fair play] BrE NAmE noun uncountable
the fact of playing a game or acting honestly, fairly and according to the rules
•a player admired for his sense of fair play
•The task of the organization is to ensure fair play when food is distributed to the refugees.
Idiom: ↑fair play to somebody

Example Bank:
•The task of the international observers is to ensure fair play in the distribution of food and medicines.