双方一辩用英文怎么说

"双方一辩" (shuāng fāng yī bǐ) 指的是两方在辩论中交替发言。这个说法源于中文，并不是英文表达。

在英文中，"双方一辩" 可以用 "alternating arguments" 来表示。例如：

The two debaters took turns presenting their alternating arguments. (两位辩手轮流发表他们的论点。)

也可以用 "back and forth" 来表示。例如：

The two sides went back and forth in their debate, each presenting their own points of view. (两方在辩论中交替发言，每方都陈述自己的观点。)

还有一种表达方式是 "taking turns"。例如：

The debaters took turns presenting their arguments, each making a case for their position. (辩手轮流发表论点，为自己的立场进行论证。)