Mr. Brownson, I assure you, King's an old enemy of mine.

布朗森先生，我向你保证，金是我的夙敌。

《柯林斯英汉双解大词典》

We are under attack from an old enemy.

某位宿敌正在攻击我们。

youdao

Mr Brownson, I assure you King's an old enemy of mine.

布朗森先生，我向你保证金是我的老冤家。

youdao

Aghast at having to live under his old enemy Julius Caesar, he tried to stab himself.

NEWYORKER: Noble Savages

Will Gordon Brown, the chancellor, exult in the absence of Peter Mandelson, his old enemy and Mr Blair's confidant?

ECONOMIST: Politics

Piracy is an old enemy for the multibillion dollar entertainment industry, the Internet's power to propagate illegal copies notwithstanding.

CNN: Focus on the DeCSS trial