authority on的用法和樣例：
例句
- She's looked on as the leading authority on the subject.
她被認為是該問題的主要權威。 - She's an authority on phonetics.
她是語音學權威。 - He posed as an authority on that subject.
他以那個問題的權威自居。 - One authority on spiders made a census of the spiders in a grass field in the south of England
一位研究蜘蛛的權威對英國南部的一塊草坪上的蜘蛛作了一次統計。 - This old man is a leading authority on wheat diseases.
這位老人是小麥病蟲害方面的權威。
