cognoscenti
noun [ plural ] formal uk/ˌkɒn.jəˈʃen.tiː/ us/ˌkɑː.njəˈʃen.tiː/
（尤指艺术方面的）鉴赏家，专家，行家
a group of people who have a great knowledge and understanding of a particular subject, especially one of the arts
Not being one of the cognoscenti, I failed to understand the ballet's subtler points. 因为不是行家，我领悟不到这场芭蕾舞的精妙之处。