【填空绿皮excercise41第7题】关于第一句的语法理解

vivikigar

在绿皮41的第7题中，第一句是： Most psychologist,perplexed by the feelings they acknowledge are aroused by aesthetic experience,have claimed that these emotions are genuine,but different in kind from nonaesthetic emotions.

我对那个 they acknowledge are理解无能了。。。盼各位大们给说说，谢谢。