authoritative
                    
      英 [ɔːˈθɒr.ɪ.tə.tɪv]                            
                        美 [əˈθɔːr.ə.t̬ə.t̬ɪv]                    
                    
                    
                    
                 
                
             
                        
            
                联想记忆法:想象一个“作者”(author)拿着一本“权威”(authoritative)的书籍,由此产生“有权威的作者”的印象,帮助记住“authoritative”这个单词的含义。 
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- authoritative (adj.)
- c. 1600, "dictatorial" (a sense now restricted to authoritarian), from Medieval Latin authoritativus (see authority). Meaning "possessing authority" is recorded from 1650s; that of "proceeding from proper authority" is from 1809. Related: Authoritatively; authoritativeness.
 
                
- 1. 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。
- 2. "Very well," I said, adopting a crisp authoritative tone. 
- “很好,”我用干脆的命令性的语气说道。
- 3. He has a commanding presence and deep, authoritative voice. 
- 他仪态威严,声音低沉,说话有威信。
- 4. 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。
- 5. an authoritative tone of voice 
- 命令式的口气