It somehow seems hardly surprising that Ms. Player is now his sworn enemy.

看来，普莱耶女士现在成了他不共戴天的仇敌似乎不足为奇了。

《柯林斯英汉双解大词典》

He was Jack's sworn enemy.

他是杰克不共戴天的敌人。

youdao

I'm the sworn enemy of Big Bad Baal.

我是又大又坏的巴尔的死敌。

youdao

Not only is he jealous, he is also a werewolf, sworn enemy to all vampires.

VOA: standard.2010.07.07

They were outraged by the news that he had recently met his sworn enemy, President Kabila.

ECONOMIST: Congo��s hidden war

However we anaesthetists had one sworn enemy, and that was the plastic surgeons.

BBC: A mean time for doctors

But Mr Armani's other suitor is an Italian and Mr Arnault's sworn enemy, Domenico De Sole, the boss of Gucci.

ECONOMIST: The cashmere revolutionary