彼は長年の仇敵とついに対峙した。
He finally came face to face with his longtime archenemy.
両国はかつて仇敵同士だったが、今では友好関係にある。
The two countries were once sworn enemies, but now they are on friendly terms.
彼は父を陥れた男を仇敵として憎み続けた。
He went on hating the man who had ruined his father as his mortal enemy.