have wide but not expert knowledge; know something about everything ? 他的外號叫“百事通” 先生，但學(xué)識～。His nickname was“Mr Know-all”，and his knowledge was wide but shallow.
博而不精bó ér bù jīnɡ
學(xué)識雖然廣博，但不精通。know sth. about everything, have wide but not expert knowledge
博而不精bó ér bù jīnɡ
學(xué)識雖然廣博，但不精通。know sth. about everything, have wide but not expert knowledge