成仁的英文：
[Formal] to die for a righteous cause

formal是什么意思：
adj. 正式的；礼仪上的；有条理的；正规的；公开的 ；拘谨的

You should recast the report in formal wording as it is a formal occasion.
这是一个很郑重的场合，所以你的报告应改的正式一点。

A formal note is essentially a formal personal letter.
正式照会实质上是正式的个人函件。

They are very formal in their business transactions.
他们的商务议事很有条理。

die是什么意思：
v. 死，死于；枯萎，凋谢；渴望；消失；熄灭
n. 骰子

The die is cast
木已成舟

The die is cast.
木已成舟。

To die a natural death (to die in one's bed)
寿终正寝

righteous是什么意思：
adj. 正直的，正义的；道貌岸然的

He was full of righteous indignation.
他义愤填膺。

A mirror hanging on an empty hall—in praise of a righteous magistrate
虚堂悬镜

They were full of righteous indignation at the thought of being cheated.
一想到受骗了他们就义愤填膺。