round robin
剑桥词典
round robin noun [C] (LETTER)
UKa letter , usually of demands or complaints , that is signed by many people
（通常指提出請求或投訴的）聯名信，聯名聲明書
UK
a letter that you send to a lot of people , for example at Christmas , telling them what you have done that year
傳閲的信件，發送給多人看的信件（如在聖誕節時的信件，告訴別人自己那一年所做的事情）
round robin noun [C] (COMPETITION)
a competition in which all the players play against each other at least once
循環賽 返回 round robin