dilettante       
noun [ C ]  usually disapproving uk/ˌdɪl.əˈtæn.ti/ us/ˈdɪl.əˌtɑːnt/  dilettanti /ˌdɪl.əˈtæn.ti/ /ˌdɪl.əˈtæn.ti/ dilettantes
 一知半解者;半吊子;业余爱好者
a person who is or seems to be interested in a subject, but whose understanding of it is not very deep or serious
  He's a bit of a dilettante as far as wine is concerned. 就对酒的研究而言,他只是有点爱好而已。