The law is the final arbiter of what is considered obscene.

何谓猥亵最终由法律裁决。

《牛津词典》

The state is also the final arbiter of law.

国家还是法律的仲裁者。

youdao

She was the final arbiter on all matters of fashion.

最终决定召回那些问题产品。

youdao

Even religious truths, which, of course, even religious truths have to be subjected to the final arbiter, who is the individual's conscience and the individual's power of reason.

当然，即使是最强有力的知识形式，即使是宗教真理也必须受制于最终的裁决者，也就是个人的良心和推理的力量。

耶鲁公开课 - 弥尔顿课程节选

Winning new business pitches is, sadly perhaps, the final arbiter of quality in Advertising.

FORBES: The 7 Deadly Sins Agencies Love To Indulge In When Pitching

The press officer for Iceland's Ministry of Foreign Affairs was expected to be the final arbiter.

CNN: Iceland's volcano a mouthful to say

And in our democracy, of course, the American people are the final arbiter of our foreign policy.

WSJ: James Baker on Obama's First 100 Days