半ㄅㄢˋ瓶ㄆㄧㄥˊ醋ㄘㄨˋbànpíngcù

  1. 比喻對知識、技能了解、掌握得不夠透徹；也指對知識、技能了解、掌握得不夠透徹的人。例 「半瓶醋響叮噹」、「他是個半瓶醋，哪有甚麼大學問？」。

英dabbler, dilettante who speaks as though he were an expert