and when the new staff are predominantly young men and women fresh from past graduate study ， they largely define the norms of academic life in that faculty
断句：
① and when the new staff are predominantly young men and women fresh from past graduate study
② they largely define the norms of academic life in that faculty
各部分结构：
① and+时间状语从句( when the new staff are predominantly young men and women fresh from past graduate study ，其中主语：the new staff，系动词： are，表语：predominantly young men and women fresh，定语from past graduate study)
② 主语(they)+谓语( largely define)+宾语( the norms of academic life)+定语( in that faculty )
参考译文：当新的员工是刚完成研究生阶段学习的男女青年时，他们很大程度上决定了该学院学术生活的标准。