authoritative

adj

1. sanctioned by established authority

e.g. an authoritative communique
the authorized biography

Synonym: authorizedauthorised

2. having authority or ascendancy or influence

e.g. an important official
the captain's authoritative manner

Synonym: important

3. of recognized authority or excellence

e.g. the definitive work on Greece
classical methods of navigation

Synonym: classicalclassicdefinitive

1. 权威的;威严的;有威信的
Someone or something that is authoritative gives an impression of power and importance and is likely to be obeyed.

e.g. He has a commanding presence and deep, authoritative voice...
他仪态威严，声音低沉，说话有威信。
e.g. Her smile was warm but authoritative.
她的笑容很和蔼，同时又透着威严。

2. （在某一方面）权威性的，可信的
Someone or something that is authoritative has a lot of knowledge of a particular subject.

e.g. The first authoritative study of polio was published in 1840...
关于小儿麻痹症的第一篇权威性研究报告发表于1840年。
e.g. The evidence she uses is usually highly authoritative.
她采用的证据通常都具有很高的可信度。

1. 授权：DNS服务器的角色可以分成3种:根(Root)、授权(Authoritative)和解析(Resolver). 不同角色的DNS对安全的要求层次也不同. 由于历史原因,所有的根服务器都分布在北美和欧洲. 我国电信运营商,一般都会在各省统一部署DNS服务器,

2. authoritative的反义词

2. 权威：AUE²:权威(Authoritative)有用(Usable)有趣(Enjoyable)高效(Effective) 5年级的学生除了具备一定分析能力,对社会也有了认知和自己的见解. 刊物让学生结合课堂知识的学习,观察大自然、思考人类社会,灵活运用书面文字表达自己的观察所得.