恩怨的英文：
(feeling of) resentment
(longstanding) grudge

参考例句：

To quit scores
恩怨两消

All the bad blood between them was forgotten when they had to unite against the enemy.
"他们忘却了所有的恩怨,联合抗敌。"

The idea that TV shows like 'Dallas' or 'Dynasty' represent typical American life is laughable.
说《豪门恩怨》或《锦绣豪门》等电视剧是美国人生活的典型写照是很滑稽的。

feeling是什么意思：
n. 感觉；想法；态度；情感；激动；理解力；同情；知觉；气氛

feeling of efficacy
效力感

Has a feeling for language.
对语言有领悟力

You can feel the electricity in the crowd.
你可感到群众的激情。

resentment是什么意思：
n. 怨恨

This can only breed resentment.
这只会引起怨愤。

Their level of resentment also increases.
他们的怨恨情绪也会增加。

gnaw into; make resentful or angry.
侵蚀；使愤慨或者生气。

longstanding是什么意思：
adj.
(已持续)长时间的,为时甚久的

Longstanding poverty has been exacerbated by racial divisions.
种族分化已经加剧了长期的贫困问题。

The economy has longstanding weaknesses, such as poor skills and a congested transport system.
经济长期疲软，就好像是不熟练的手艺和拥挤的公交系统。

He eventually killed her because of a long-standing feud.
因为宿怨，他最终杀了她。