英文中正反方的表达

the Proposition :正方

the Opposition ：反方

first speaker of the Proposition:正方第一位发言人

（以此类推）

first speaker of the the Opposition：反方第一位发言人

（以此类推）

members of the opposing team：对方成员

fellow有自己队友的意思

对方辩友是fellow debaters

Or you can call exactly like "the first debater of proposition" or "the second debater of oppposition" ...

We don't confuse fellow debaters with members of the same side, because we call them "partners".

By using the word "fellow", I think we can make a friendly atmosphere in which the debate can be carried out pleasantly, without aggressive arguement involved.