arch-rival

基本解释

Your arch-rival, the Panasonic LX5, can zoom during video.
你的劲敌索尼LX5能边拍照边聚焦。
There were memorable high points in the early days, including a rousing reception for athletes from India’s arch-rival, Pakistan, as they marched into the stadium.
在最初的几天内也有令人难忘的高潮，比如当印度的主要竞争对手巴基斯坦的运动员进入体育场时，来自观众的欢迎十分热烈。
India has won bragging rights over Pakistan after beating its arch-rival on the cricket field and advancing to the World Cup final match against Sri Lanka set for Saturday.
印度在世界杯板球半决赛中击败劲敌巴基斯坦，赢得决赛权。将在星期六对阵斯里兰卡队。

But in his conciliatory mood Saturday, Mr.Ravalomanana suggested he would not object to a constitutional change that would allow his arch-rival to seek the presidency.

One analyst has even raised the possibility of a merger with BP, its British arch-rival.
ECONOMIST: A damning verdict The
Worse yet, they convincingly beat arch-rival Michigan (28-14), yet lost to Michigan in BCS standings.
FORBES: Michigan State Is Bowled Over Again By The BCS