金玉其外的英文：
cheap and nasty

参考例句：

To have all one’s goods in the window
金玉其外

A rotten interior beneath a fine exterior
金玉其外，败絮其中

`He's such a bounder underneath his veneer...just waiting to bounce us.'
“他是个金玉其外，败絮其中的家伙……他时时准备着向我们攻击。”

cheap是什么意思：
adj. 便宜的；不值钱的；小气的
adv. 便宜地

a cheap restaurant.
收费低廉的饭馆.

He Bought that car on the cheap
他的那部车买的真便宜

Eggs are very cheap now.
现在蛋很便宜。

He's such a cheap skate.
他是个小气的人。

Unbelievably hot,cheap,stupid
热得、便宜得、愚蠢得难以置信.

nasty是什么意思：
adj. 令人讨厌的；险恶的，恶劣的；下流的；肮脏的
n. 令人不愉快的事物

The wind was still a nasty nip.
风依然是寒冷的。

This divorce could turn nasty.
这场离婚可能会撕破脸。

Buzz off, you nasty little child!
滚开，你这个讨厌的小鬼！

Her shoes looked cheap and nasty to me.
她的鞋在我看来很不值钱。

The people are looking forward to being delivered from the nasties.
人民期待着从不愉快的状况中解脱出来。