authoritative

柯林斯詞典

1. ADJ Someone or something that is authoritative gives an impression of power and importance and is likely to be obeyed. 有權威的
He has a commanding presence and deep, authoritative voice. 他儀態(tài)威嚴，聲音深沉而有權威。
2. ADJ Someone or something that is authoritative has a lot of knowledge of a particular subject. (關於某一學科) 權威性的
The first authoritative study of polio was published in 1840. 關於小兒麻痺癥的首篇權威研究報告發(fā)表於1840年。