名词
1. The once friendly countries became adversaries in the war.
这些一度十分友好的国家在战争中成了敌对国。
1. 对方当事人对手：adventurer 冒险家 | adversary 对方当事人;对手 | adversary 对方当事人对手
1. 敌手；对手
Your adversary is someone you are competing with, or arguing or fighting against.
e.g. Elliott crossed the finish line just half a second behind his adversary...
埃利奥特跨过终点线时仅比对手落后半秒钟。
e.g. His political adversaries were creating a certain amount of trouble for him.
他的政敌正在给他制造一些麻烦。