这些名词均有“对手，敌手”之意。 opponent : 最常用词，通常指在争论、辩论、竞选或竞赛以及其它各种矛盾冲突中站在对立面的“对手”或“……
这些名词均有“对手，敌手”之意。
opponent : 最常用词，通常指在争论、辩论、竞选或竞赛以及其它各种矛盾冲突中站在对立面的“对手”或“敌手”。
a political opponent
政敌
Leading opponents of the proposed cuts in defence spending will meet later today.
反对削减国防开支建议的带头人将在今天晚些时候会面。
In the second game, her opponent hurt her leg and had to retire.
在第二局，她的对手拉伤了腿，不得不退出比赛。
competitor : 指为同一目标或目的竞争者，一般无感情色彩。
Their prices are better than any of their competitors.
他们的价格比所有竞争对手的都要优惠。
How many competitors took part in the race?
有多少选手参加了赛跑？
enemy : 多指充满敌意的仇敌。
He's made a few enemies in this company.
他在公司中和几个人结了怨。
Max stole Lee's girlfriend and they've been enemies ever since.
马克斯抢走了李的女朋友，从那以后他们就成了冤家对头。
political enemies
政敌
The enemy had succeeded in stopping our supplies from getting through.
敌人成功切断了我军的补给线。
an attack by enemy aircraft
敌机的空袭
enemy forces/territory
敌军／敌区
foe : 语气较强，多用于书面文字和诗歌中。指不仅敌对，而且很危险，怀有很深的敌意。
The two countries have united against their common foe.
两国联合起来对抗共同的敌人。
They were bitter foes for many years.
他们结仇多年。
Foes of the government will be delighting in its current difficulties.
政府的敌人会对政府目前的困难处境幸灾乐祸。
rival : 指与某人目标一致而想赶上或超过他的人，匹敌者。
He beat his closest/nearest rival by 20 marks.
他以领先20分的成绩打败了和他水平最接近的对手。
The companies produce rival versions of the toy.
这些公司生产的玩具跟我们的产品争夺市场。