积怨的英文：
grievance
accumulated rancor

参考例句：

It's never too late If you have let a grudge fester for decades, remember it's never too late to heal wounds.
从不嫌晚如果内心的积怨已长达数十载，请记住抚平创伤总比留着好，从不嫌晚。

settle a score, grievance, etc
清算旧仇、 积怨等.

parting without rancor.
毫无积怨地分手。

It is difficult to remove overnight all the grievances accumulated over the years.??T?
积怨很深，一下子难以消除。

Hate smouldered inside him.
他心中积怨甚久.

He feuded with his ex-wife.
他和前妻积怨已久。

If you don't overcome this anger, it can turn into bitterness.
如果你不克服这种愤怒，它将转变为积怨。

The crisis is rooted in deep rivalries between the two groups.
这场危机的根源是这两个群体之间积怨已深的敌对情绪。

When a person cannot kill aloneness or find no one to communicate, the people will get angry.
当一个人不能打发孤独，找不到可以交流的人，没有人能理解他，便会积怨于心。

He might have been murdered by a former client or someone harboring a grudge.
他可能是被一个前委托人或某个怀有积怨的人谋杀了。

grievance是什么意思：
n. 不满；委屈，冤情

settle a score, grievance, etc
清算旧仇、 积怨等.

They petitioned Parliament to redress grievances.
他们向国会请求解除疾苦。

A committee was set up to look into the workers' grievances.
已成立一专门委员会调查工人们的申诉。

accumulated是什么意思：
adj. 累积的
v. accumulate的过去式和过去分词

Extraordinary progress in the accumulation of knowledge.
但人类在积累知识方面已经取得了非凡的进步。

Accumulated Depletion is a contra-asset account similar to the Accumulated Depreciation account
累计损耗是一个资产对冲账户,与累计折旧类似。

A pile of work accumulated on his desk.
他桌子上压了一大堆活儿。

rancor是什么意思：
n. 敌意,深仇

Rendered tenfold difficult by a churlish boor of an employer in all the rancor of an ancient grudge against her.
雇主是一个苛刻粗暴的乡下佬，他怀着旧有的怨恨，对苔丝非常憎恶，这给苔丝更增添了十倍的困难。

The seeds of rancor sown so swiftly by Colonel Cathcart took root in the soldiers around him
卡思卡特上校如此突兀地布下的仇恨种子，在他四周这些兄弟们的心里生下了根。