大义灭亲的英文：
[Literal Meaning]
justice/punish/relative
to punish one's own relations in the cause of justice

[解释]
为了维护正义，对犯罪的亲属不徇私情，使其受到应得的惩罚。

[Explanation]
to place righteousness above family loyalty

[例子]
法官大义灭亲，判处自己朋友的儿子十年徒刑。

[Example]
The judge places righteousness above family loyalty and sentenced the son of his friend 10 years in prison.

To uphold justice and righteousness even at the sacrifice of blood relations
大义灭亲