authoritative

adj.权威的,有权威的,命令的

权威的；有权威的；可信赖的

形容词

1、The official statements given were the most authoritative sources for the news.
官方给出的声明是这个新闻最可信赖的来源。
2、She is an authoritative figure in the field of psychology.
她是心理学领域权威人物。