大学英语语法句法

these facts challenge many of the priorities we have set ourselves both as societies and as individuals.这个句子中,many of the……,这个many of是什么情况,做什么成分,整个句子的结构如何.谢谢还有请翻译下意思,
(1) These facts challenge many of the priorities (这些事实对很很多优先权提出挑战）
(2) we have set ourselves both societies and as individuals （我们自己设定的社会优先权及个人优先权）
句子语法结构分析如下
主语：These facts
谓语：challenge
宾语：many of the priorities
修饰宾语的定语从句 (that /which) we have set ourselves both societies and as indvividuals
定语从句语法结构分析如下
主语：We
谓语：have set
同位语：ourselves
状语：both as societies and as individuals
句子中文意思：这些事实向我们自己设定的很多社会优先权和个人优先权发起挑战.