Historically, there has always been a great deal of rivalry between the two families.

这两个家族世世代代对立斗争。

《牛津词典》

Attack and defense are two basic sides of rivalry.

攻击和防御是对抗的两个基本方面。

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Moreover such flag waving is born of rivalry between nations.

更近一步说，这面飘扬的旗帜是国家间竞争的产物。

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The rivalry between the two aeronautics giants also took a new turn on Tuesday when Boeing accused Airbus of violating world trade regulations by seeking European government financing for its new A350 planes.

VOA: standard.2009.06.16

It reminds one of sibling rivalry.

它让我们想起敌对的兄弟。

耶鲁公开课 - 旧约导论课程节选

What do you think of the rivalry between Yale and Harvard?

你是如何看待耶鲁和哈佛这两所大学之间的竞争关系呢？

耶鲁对比哈佛 - SpeakingMax英语口语达人

Their relationship might seem prone to sibling competition, but in reality there are few traces of rivalry.

WSJ: Kiki and Seton Smith, Sisters and Artists

But the dynamics of rivalry in the solar cell business are as clear as a bright sunny day.

FORBES: When Government Fails at Industry Analysis: 3 Solar Cell Bankruptcies

To accomplish anything at all, Mr Samaras will have to put aside a lifetime of rivalry and rise above the politics of patronage.

ECONOMIST: The euro