轻薄的英文：
frivolity
levity

参考例句：

The sidewise look and a pull at the beard expressed concurrence with a naughty erotic taste.
他眼光朝旁边一瞟，捋了捋胡子，同时装出一副色迷迷的轻薄相。

an airy organdy blouse
轻薄的蝉翼纱套衫

It was cruel levity in you to do that
那本是你狠心轻薄的行为。

Aluminum is a kind of light silvery metal
铝是一种轻薄并呈银色的金属。

Inclination in that direction has long been considered frivolous and unmanly
这方面的爱好长期被认为是轻薄和非男子气的。

People continue to abandon bulky desktops in favor of the ever-sleeker, lighter portables.
人们继续丢掉笨重的台式电脑，转向更加轻薄的笔记本电脑。

She was wearing a flimsy pink dress that streamed out behind her.
她穿的那件轻薄的粉红色连衣裙在身后飘舞。

Youth is always too serious,and just now it is too serious about frivolity.
青年时代总是过于认真的，而时下青年则过分轻薄。

Compared to those, what we see now are new phones with superb reception, which are light and small to carry.
与它们相比，我们今天的手机不但接收性能好，而且小巧轻薄，便于携带。

Handsomely refined. Meticulously detailed. Elegantly slender. To keep you looking your best every moment.
精细打磨，做工考究，轻薄造型，精工表使你赏心悦目，百看不厌。

frivolity是什么意思：
n. 轻薄,轻率,不足取的事

To discuss in a casual or frivolous manner:
以漫不经心或琐碎的方式议论。

If I could intrude a note of seriousness into this frivolous conversation..
我真想说一句,叫他们谈话放严肃些...

I think there is a kernel of truth in these otherwise frivolous comments.
我认为在这些本来是无关紧要的评论中含有一定的真实性。

He is wasting his time on frivolous matters.
他正把时间浪费在无足轻重的事情上。

Inclination in that direction has long been considered frivolous and unmanly
这方面的爱好长期被认为是轻薄和非男子气的。

levity是什么意思：
n. 轻率,轻浮,轻薄

Better to read little with thought than much with levity and quickness.
与其不经心多读,无宁少读而用心思考

Miss Moore was a woman of steady deportment, without the least levity of conversation or carriage.
穆尔小姐是个态度稳重的女人，谈吐举止绝无半点轻浮之处。

They that desire to excel in too many matters, out of levity and vain glory, are ever envious. For they cannot want work; it being impossible, but many, in some one of those things, should surpass them.
那些因其轻薄和自负而想在各方面都胜过他人者亦常嫉妒，因为他们绝不会缺少嫉妒的对象，在他们想争胜的诸多方面之某一方面，不可能没有许多人会胜过他们。