在英语中，回合通常被称为 "round"。这个词是从古英语 "þrotian" 进化而来的，意思是 "转动"，"转圈" 或 "旋转"。在古英语中，"þrotian" 还有一个同义词 "þryt"，意思是 "周期" 或 "循环"。
下面是一些使用 "round" 这个词的英文例句：
The boxing match lasted for 12 rounds. (拳击比赛持续了 12 回合。)
We played a round of golf on the weekends. (我们在周末打了一场高尔夫球。)
The debate will be divided into three rounds, each with a different topic. (辩论将分为三轮，每轮讨论的话题不同。)
I'll have a round of drinks on me. (我来请客喝一轮。)
The sun goes round the earth. (太阳绕地球转动。)
下面是一些使用 "round" 这个词的英文例句：
The boxing match lasted for 12 rounds. (拳击比赛持续了 12 回合。)
We played a round of golf on the weekends. (我们在周末打了一场高尔夫球。)
The debate will be divided into three rounds, each with a different topic. (辩论将分为三轮，每轮讨论的话题不同。)
I'll have a round of drinks on me. (我来请客喝一轮。)
The sun goes round the earth. (太阳绕地球转动。)