详细解释:联名声明书, 循环赛, 一系列
英语解释：
名词 round robin:
a tournament in which every contestant plays every other contestanta letter signed by a number of people例句：
The people in our neighborhood are sending a round robin to the Air Force to protest the nice the jet planes make flying over our house.我们这一带的居民在向空军部队递交一份有环形签名的抗议书，就喷气式飞机飞越我们住宅上空时产生的噪音问题提出抗议。