主' what is called 'modern civilization'
系is
表not the result of a balanced development of all man's nature,but of accumulated knowledge applied to practical life'
来分析表语这部分,这部分是由名词短语来充当的.中心名词the result
of a balanced development of all man's nature
of accumulated knowledge applied to practical life
这两个介词短语用作中心名词后置定语,but是连接这两个介词短语的连词.
也可以从not ...but.这个句型来看
表语部分=not the result of a balanced development of all man's nature,but (the result) of accumulated knowledge applied to practical life' 省略掉了重复内容