睚眦必报的英文：
[Literal Meaning]
stare/must/revenge
to seek revenge for the smallest grievance as staring

[解释]
睚眦：发怒时瞪眼睛。像瞪一下眼睛那样极小的仇恨也要报复。

[Explanation]
not to let anyone get away even with a hostile look

[例子]
他这个人心胸不是很开阔，睚眦必报，所以你要小心点。

[Example]
He was not a broad-minded man and sought revenge for the smallest grievance. You'd better be careful.