请问这句gre英文是什么意思

Question

A person who agrees to serve as mediator between two warring factions at the request of both abandons by so agreeing the right to take sides later. To take sides at a later point would be to suggest that the earlier presumptive impartiality was a sham.请问第一句中的“abandons by so agreeing the right to take sides later”是啥意思？这两句话是什么逻辑关系？看不出来ing 谢谢解答！

Answer 1

我不是太清楚我说的对不对，但是我绝对没有用什么翻译软件。我翻译的可能会有问题，你就参考一下吧。
首先你的断句就不对，abandons by so agreeing the right to take sides later,不是这样的。应该是A person( who agrees to serve as mediator between two warring dactions (at the quest of both abandons)) by so agreeing the right to take sides later）.
在both只有出现的abandon是终止的意思。就是说一个人如果同意为双方做调解人但是会在支持某一方利益的情况下导致服务终止，以后对某一方利益的支持就意味着之前的以公平为基础的前提是扯淡。

追问

那请问这一句的主语的谓语动词是谁

Answer 2

一个人谁同意作为服务于既要求两个派系之间的调解人放弃这么同意稍后选择支持。在后来偏袒一方表明早期推定的公正是虚假的

Answer 3

某人应已放弃此案的双方，以同意在调解的后阶段有偏袒一方的权力为条件，同意做有争议双方（factions)的调解工作。在调解的后阶段偏袒一方意味着早期的劝说性的修补工作为一场骗局。

“both abandons”是at the rquest of " 的宾语。“ by so agreeing the right to take sides later“，是 "agrees” 的条件句。即以在答应此条件的情况下做协调工作。