淘气的英文：
naughty
bad

参考例句：

a roguish grin.
淘气的露齿一笑

Many monkeys make much mischief.
许多猴子很淘气。

Some naughty boys daubed the wall with black ink.
一些淘气的男孩子用黑墨水在墙上乱涂乱画。

If you're naughty, mother will spank you
你如果淘气,妈妈就会打你屁股的。

An ugly, mischievous elf or goblin.
淘气的妖精丑陋而又顽皮的鬼怪或精灵。

Of or befitting an imp; mischievous.
顽童的；顽皮的属于或适于顽童的；淘气的

Paper that is prone to yellowing;children who are prone to mischief.
易发黄的纸;倾向于淘气的孩子们

Their naughty children always contrive to make such a mess of things.
他们家那些淘气的孩子们老是把家里弄得一团糟。

Keep...out of mischief
使…不淘气

An impish smile
淘气的微笑

naughty是什么意思：
adj. 顽皮的，粗俗的

still marry such a naughty, naughty princess?
还会和这样肮脏下流的公主结婚吗

The naughty boy teased the dog.
那个顽皮的男孩逗弄那只狗。

It's a naughty novel.
这是一本猥亵的小说。

She was beleaguered by naughty children.
她受到了顽皮孩子的烦扰。

The naughty kid was in the classroom in body but not in spirit.

bad是什么意思：
adj. 坏的；有害的；严重的；腐坏的；不适合的
adv. 很，非常
n. 不好的东西或情形

That was a bad miss.
那是一个严重的失误。

This is a bad simulation.
这是一次拙劣的模仿。

A Bad beginning makes a Bad ending
恶其始者必恶其终

Bad taste, Harry, bad form!
太不文雅了，哈里，太不体面了。

There are no bad materials as such, but only bad articles.
没有不好的材料，只有不好的产品。