Warnings of an enemy attack forced the troops onto the defensive.

敌军显示出进攻的迹象，部队不得不进入戒备状态。

《牛津词典》

He was interned as an enemy alien at the outbreak of the Second World War.

他在第二次世界大战爆发时被作为敌国侨民扣押了。

《柯林斯英汉双解大词典》

A wealthy man like yourself is bound to make an enemy or two along the way.

像你自己这样的一个有钱人注定会在前进的路上树一两个敌人。

《柯林斯英汉双解大词典》

So he was seen as an enemy of conservation.

VOA: special.2010.09.02

God saw that he had to limit the life span of humans, or risk creating an enemy that was nearly equal to him.

上帝发现他限制了人类的寿命，否则就是冒险创造了与他平等的死敌。

耶鲁公开课 - 旧约导论课程节选

It could be an enemy. It could be a friend. It could be yourself.

可能是敌人，可能是朋友，可能是你自己。

耶鲁公开课 - 心理学导论课程节选

Even if an enemy offers you nectar, lack of trust will keep you from drinking it.

FORBES: Obama in Israel: Was His Leadership Smart or Wise?

And the Supreme Court ruled that the US government could classify Hamdi as an enemy combatant.

NPR: Padilla Appeals His U.S. Captivity

But since the comics version was battling an enemy from space, there was little fuss.

CNN: The War Mangas