authority
单词辨析：
指某学科或某方面的专家、大师，常后接介词 on。
We see him as an authority on American literature.
我们视他为美国文学方面的权威。
She is a leading authority on wheat diseases.
她是小麦病害方面的权威。
指从事科学研究工作的科技人员或某一学科的专家。
automation/chemistry/physics boffins
自动化科学家/化学家/物理学家
指通过培训或实践获得了有关某一方面的特殊技能或知识的人，常后接介词 on/at/in。
a computer expert
计算机专家
an expert in finance/teaching
金融/教育专家
In her opinion, the manager is an expert at getting his own way.
在她看来，经理在如何达到自己的目的方面很在行。
指某一特定领域或研究中的专家，常可与 expert 换用，常后接介词 in。
Dr. James is a specialist/an expert in information retrieval.
詹姆斯博士是位信息检索专家。
He is a specialist/an expert in computer programming.
他是个电脑编程专家。
相关例句：
I'm always wary of men wearing suits, as I equate this with power and authority
我向来提防穿西服的男人，因为我认为穿西服就等同于权力和权威。
Popular acceptance of authority had been an early aim of the Nationalists.
国家主义者的一个早期目标是推动民众对权威的接受。
The frauds have been unearthed by investigators working for the Camden and Islington Health Authority.
这些欺诈行为已被卡姆登和伊斯灵顿卫生局的调查人员揭露了出来。
Who gave you authority to do this?
谁授权你做这件事？
The Prime Minister's opponents believe that her authority has been fatally weakened
首相的反对者认为她的权威已经受到致命削弱。
The authority of his voice is undermined by the smallness of his build.
瘦小的身形削弱了他声音中的权威感。