这是with引导的独立主格结构,这种结构在英语中很常见,有多种形式,在句子中作状语.此处是with ＋名词（代词）＋名词 .例如：
She used to sit reading in the evening with her pet dog her only companion．
她从前总爱在晚上坐着看书,她的宠物狗便是她唯一的伙伴.
Knowledge and talents are the most important elements in innovative economy,with knowledge the sources of innovation and talents the main body.这句中唯一不同的就是两个并列的结构,相当于第二个省略了with.