parade one's knowledge
賣弄學(xué)問
A:Mark is parading his knowledge again.
A:馬克又在賣弄學(xué)問了。
B:Yeah! He's very good at showing off his knowledge.
B:是啊,他總是善于炫耀。
A:A well-learned person never does that.
A:真正有學(xué)問的人從不那樣做。