/ˈæd.vɚ.set.i/
Your adversary is someone you are competing with, or arguing or fighting against.
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。
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。