A: Mark is parade his knowledge again.
马克又在卖弄学问了。
B: Yeah! He’s very good at showing off his knowledge.
是啊，他总是善于炫耀。
A: A well-learned person never does that.
真正有学问的人不会这样做的。
地道表达：
parade one’s knowledge
解词释义：
parade有“炫耀，卖弄”的意思。改习语意为“炫耀，卖弄自己的知识”。改习语也可以用作make a parade of one’s knowledge.
支持范例：
A genuine scholar does not make a parade of his knowledge.
真正的学者不会夸示他的知识。
Don't make a parade of your knowledge in face of others, nor even look down upon those who abound in inherent weaknesses.
不要以自己的长处骄人，也不要轻看那些多有短处的人。
He's always parading his knowledge.
他老爱炫耀知识。
词海拾贝：
1 be good at：擅长于......
范例：I am not good at sports, but I like to watch them.
我不擅于运动，但我喜欢看。
He is good at managing money matters.
他很会理财。
He is good at initiating projects but rarely follows through with anything.
他颇能提方案，但干什么事情都很少坚持到底。
He' s well-intentioned but not very good at getting things done.
他常常是好心办不出好事。
2 show off：炫耀，卖弄
范例：His show off only serves to show up his ignorance.
他的卖弄只不过暴露了他自己的无知。
She did a quick twirl to show off her dress.
她轻快地一转身,炫耀自己所穿的衣服。
They run around and talk and show off too much.
他们到处跑来跑去，吹牛，夸耀自己。
Although he wants to make a hit, I think he hasn't got much to show off.
虽然他想大出风头, 不过我以为他没有什么可炫耀的。
3 well-learned：真才实学的
范例：Ten years later he became a well-learned scholar and famous doctor.
十年后他成为了著名的学者和医生。
He's well-learned and full of dandy ideas.
他学习很好，并且有许多好主意。
更多信息请查看生活口语
