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Someone or something that is authoritative gives an impression of power and importance and is likely to be obeyed.
He has a commanding presence and deep, authoritative voice.
他仪态威严，声音深沉而有权威。
Someone or something that is authoritative has a lot of knowledge of a particular subject.
The first authoritative study of polio was published in 1840.
关于小儿麻痹症的首篇权威研究报告发表于1840年。
雅思英语词汇收录8785个雅思英语词条，基本涵盖了全部常用雅思英语词汇的翻译及释义，是英语学习的有利工具。