他的作用和裁判(法官)的作用类似,就是必须承担用尽可能明了的方式来揭示他的结论的推理过程的责任.
主句:his function is analogous to that of a judge (that 指function)
who 引导的从句是 judge 的非限定性定语从句,骨干结构是 who must accept the obligation of revealing in the course of reasoning ; which 引导的定语从句修饰reasoning;
as ...as...引导的是状语,修饰 revealing