s. characterized by active hostility
n. 对手, 敌手, 反对者
a. 敌对的, 反对的, 对面的
1. The opponent was tough, but I managed to win the game.
对手很强，但我设法赢得了比赛。
2. She always respects her opponent, no matter who they are.
她总是尊重她的对手，无论他们是谁。
3. The debate team prepared well to face their opponent.
辩论队为了面对对手做了充分的准备。