Many of the discrepancies between what the public sees as healthy and how experts define it can be attributed to marketing.
between what the public sees as healthy and how experts define it 是介词短语做定语吧,那么between后面引导的是什么从句呢,是名词性从句吧,那这个名词性从句在是什么成分啊,就比如between A and B,这个A是什么成分呀,如果名词A没有确切的成分,那么是不是名词性从句不能只分为四类。(主,宾,表,同)