I bet you were a little devil when you were younger.
我敢說你年輕一點的時候是個小淘氣鬼。
My niece is a little devil.
我的侄女是個調皮鬼。
The leader seemed the devil incarnate.
那個首領好像是魔鬼的化身。
Go on, be a devil, buy both of them.
來，怕什么，兩個都買了吧！
I've had a devil of a job finding you.
我費了九牛二虎之力才找到你。