adj.顽皮的;不听话的;粗俗的;
例句:
If you're naughty, mother will spank you.
你要是调皮, 妈妈会打你屁股的.
The naughty children had run a mile when their teacher arrived.
老师来的时候,那些顽皮的孩子都溜掉了.
You ought to be stricter with him. He's very naughty.
你对他应更严格, 他太淘了.