卖弄的英文：
cut round
make a display of
ostentation
show
show off
show-off
splash
splurge

参考例句：

Show off; on display
卖弄;炫耀;出风头

Characterized by or given to ostentation;pretentious.
炫耀的以卖弄为特征的或有卖弄倾向的;夸耀的

To parade oneself ostentatiously;show oneself off.
炫耀卖弄似地展示自己;炫耀自己。

Free from showiness or ostentation;unpretentious.
谦虚的不炫耀或卖弄的;不自命不凡的

They who assume a character that doesn't belong to them generally betray themselves by overacting it.
装腔作势、过分卖弄的人，总是要露原形的。

To dress or groom oneself with elaborate care or vanity;primp.
细心打扮精心地或卖弄地打扮或修饰自己;细心打扮

He is fond of show.
他喜欢卖弄。

Ostentatious/9Csten5teIFEs;9BstZn`teFEs/adj(derog)showing or liking ostentation
夸耀的;炫示的;夸示的;卖弄的

He affects a pretentious use of language, ie tries to impress people by using obscure words, etc
他爱卖弄词藻

Do stop showing off it's embarrassing.
快别卖弄了－－太难为情了。

cut是什么意思：
v. 切，割；裁剪；削减；缩短；剪切；删剪；停止；不出席；刺痛；切牌；相交
n. 切口；伤口；削减；式样；剪裁；切片；削球

That was a cut at me.
那是中伤我的话。

Gasoline cuts oil and grease.
汽油溶解油脂。

She cut a hole in the cloth.
她在布上剪了个洞。

round是什么意思：
adj. 圆形的；整数的
adv. 周围；在周围；调转方向；绕弯；到某地
prep. 环绕；围绕
n. 阶段；轮次；圆形物体；【音】轮唱曲
v. 绕行；绕过；（使）成圆形；变圆

There is a round circuit.
这有一个环型赛车场。

The water wheel goes round and round.
水车转个不停。

When you squeeze the trigger, a round or rounds of ammunition are fired.
当你紧按板机，一发或几发子弹就射出了。

make是什么意思：
v. 做；制造；生产；使得；获得；准备；引起；开始；使成为，产生；构成
n. 形状；样式；制造；构造；品牌

a man of this make
这种性格的人

make an example of
1.惩罚...以儆戒他人

make a dive for
向￥冲去