opponent

The grandmaster shook hands with his opponent before the final chess match began.

(Chinese) 国际象棋大师在决赛开始前与他的对手握手。

He studied video footage of his boxing opponent to find weaknesses in his defense.

(Chinese) 他研究了拳击对手的录像，以寻找对方防守中的弱点。

Political opponents of the new tax law organized a massive protest in the city square.

(Chinese) 新税法的政治反对者在城市广场组织了一场大规模抗议。

Environmental groups are strong opponents of the plan to build a highway through the forest.

(Chinese) 环保组织是那项穿越森林修建高速公路计划的强烈反对者。