He is in a position of unchallenged authority.

他拥有绝对的权威。

《牛津词典》

She's a recognized authority on the subject.

她在这个学科上被公认为权威。

《牛津词典》

The case was referred to a competent authority.

事情已交给有关当局处理。

《牛津词典》

Definitely not." Right now, Congress is considering a bill that would give the FDA increased authority over imported seafood.

VOA: standard.2010.05.27

Even the expulsion of Satan from heaven was not sufficient to prove beyond a shadow of a doubt the legitimate authority of God.

即使是将撒旦逐出天堂也不足以,无可置疑的证明上帝的至高权威。

耶鲁公开课 - 弥尔顿课程节选

Who has the authority to say to anyone aside from "This is a good idea."

谁能有指挥他人的权威呢？,人们只能说说这些，像“这是个好主意“

普林斯顿公开课 - 人性课程节选

Stay with essential-purpose revenue bonds, whether it be a water and sewer authority or a highway authority, something like that.

FORBES: Safety First, Says Muni Bond Manager

Thus a recent authority defines a lie as a false statement made with the intention of deceiving.

FORBES: Does Confession App by iPhone Commit a Sin?

The point is that you need to position yourself as a leading authority for a particular expertise.

FORBES: How Life Coaches Become Very Wealthy