enemy

She’s a dangerous enemy to have..与她为敌很危险。

Cats and dogs have always been natural enemies..猫和狗向来是天敌。

an old enemy of her father.她父亲的一个宿敌

the unforgettable sight of the president shaking hands with his sworn enemy.董事长与其死敌握手的难忘情景

I wouldn’t wishthis on my worst enemy..即使是我的死对头，我也不愿看到他发生这样的事情。

natural enemy,天敌

behind enemy lines,深入敌后（影片名称）

public enemy,公敌；要犯

sworn enemy,n. 不共戴天的敌仇