an authoritative tone of voice
命令式的口气
the most authoritative book on the subject
这个学科最具权威的著作
1.有权威的,可靠的
2.靠权力的;命令式的
3.当局的,官方的
1.based on the best, most complete, and most reliable information
2.showing that you are used to being obeyed or expect to be obeyed
1.But history is full of authoritative warnings of trouble to come that have been completely ignored in the euphoria of the moment.
但历史上充斥着这样的情形，在狂热的氛围里，当局有关泡沫即将来临的警告被完全无视。
2.Popes seldom weigh in on economic matters and rarely in the form of an encyclical, one of the most authoritative forms of papal writing.
教皇们很少会讨论经济问题，也很少以通谕的形式颁布。通谕是教皇文件中最具权威性的一种。
3.He would not accept as authoritative the answers which the adults about him offered in response to his questions.
他不认为周围的那些成年人对他提出的问题给予的回答是绝对可信的。
4.The information in the articles did not come from the U. S. Consulate General and is neither accurate nor authoritative.
该文章中的信息不是来源于美国总领事馆，这些信息不仅不准确而且也不具有权威性。
5.If this Agreement is written in two or more languages, the English text thereof shall be deemed to be authoritative.
如果此协议是用两种或两种以上语言印写，其中的英语应被认作是指令性语言。
6.Make sure to post useful links in discussions when necessary to provide authoritative guidance or to refer to a third party article.
切记在讨论时提供有用的链接，必要时可以提供权威性的指导或转介给第三方的文章。
7.Although there isn't authoritative evidence to back this story up the etymology of pretzel tends to support at least part of the story.
尽管人们并没有权威的证据来证实这个故事，但至少它还是部分得到了pretzel词源的支持。
8.I walk around the office trying to feel authoritative but I really just feel empty.
我在办公室里转了转，试图找到威信，但我实在是感觉空荡荡的。
9."Look here, sir, " I said, trying to sound authoritative and in control.
“你看这个，先生，”我说，试着像大人那样说话。
10.As an account of what happened and why, it is both admirably clear of befuddling jargon and authoritative in its range and detail.
作为一个危机的发生和为什么发生危机的解释，有许多令人羡慕的清晰的行话和它的小范围却大视角的独特理念。