His authority is steadily weakening.

他的权威日趋减弱。

《牛津词典》

He exerted all his authority to make them accept the plan.

他利用他的所有权力让他们接受这个计划。

《牛津词典》

The decision is seen as an assertion of his authority within the company.

这一决定被看作是公司内他的权威的显示。

《柯林斯英汉双解大词典》

In his 2,200-word retirement request General Sarath Fonseka says he was misled about his promotion this year to chief of defense staff, finding that he had "basically no authority."

VOA: standard.2009.11.14

He could not punish me now without risking his authority.

否则他无法惩罚我。

耶鲁公开课 - 1945年后的美国小说课程节选

And sometimes had them killed if he had to if he thought that's what he should do, because there wasn't any sort of challenge to his authority.

如果有必要,他甚至会杀掉那些碍事的议员,因为没有什么可以挑战他的权威

耶鲁公开课 - 欧洲文明课程节选

However, the US Supreme Court justices decided 6-3 that he had overstepped his authority.

BBC: Court seeks to stay US executions

When the proceedings start, his authority will depend largely on how impartial he appears.

CNN: A very public trial for a very private justice

The fact that Lanier is a genuine technology pioneer only adds to his authority.

NEWYORKER: The Visionary