authority

Professor Higgins is a world-renowned authority on 18th-century English literature.

(Chinese) 希金斯教授是18世纪英国文学领域享誉世界的权威。

The encyclopedia is still considered a reliable authority for historical facts and dates.

(Chinese) 这部百科全书仍被认为是历史事实和日期的可靠权威来源。

Only the police have the legal authority to block off the streets during a public protest.

(Chinese) 只有警察有合法权力在公众抗议期间封锁街道。

The captain has absolute authority over the crew and the passengers while the ship is at sea.

(Chinese) 当船在海上航行时，船长对船员和乘客拥有绝对权力。