Question

unprecedented adj.空前的；前所未有的 (1) 我们现在正经历规模空前的失业现象。(2) 他的声明引起了空前的轰动。(3) 这次空难的死亡人数是空前的。(4) 一些经济学家对失业率达到前所未有的程度表示忧虑。(5) 我们学校碰到了前所未有的困难。 The root of this word is precedent, a noun referring to something done or said that is used as an example to be followed in the future. In law, a precedent is a legal decision that is used as a standard in future cases. So the adjective unprecedented, meaning "having no precedent," was formed from the prefix un- "not," the noun precedent, and the suffix –ed "having."

Accepted Answer

英 [ʌn'presɪdentɪd] 美 [ʌn'presɪdentɪd] (1) We are seeing unemployment on an unprecedented scale.(2) His statement made an unprecedented splash.(3) The air crash caused an unprecedented number of deaths.(4) Some economists showed their anxiety on unprecedented level of unemployment.(5) Our school faced unprecedented difficulties. Something that is unprecedented is not known, experienced, or done before. If you've never gone on a family beach vacation but you're planning one now, you could refer to it as an unprecedented decision. 1[ADJ 形容词]前所未有的；空前的；没有先例的 If something is unprecedented, it has never happened before. Such a move is rare, but not unprecedented...这种做法很罕见，但也不是没有先例的。In 1987 the Socialists took the unprecedented step of appointing a civilian to command the force.1987年，社会党人史无前例地任命了一位非军队出身的人来指挥军队。2[ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]（质量、数量、规模）很高的，很大的 If you describe something as unprecedented, you are emphasizing that it is very great in quality, amount, or scale.   [usu ADJ n]  [emphasis]Each home boasts an unprecedented level of quality throughout...每家的质量都堪称一流。The scheme has been hailed as an unprecedented success.这个计划广受好评，被认为是一个巨大的成功。

英语单词	unprecedented
英美音标	英 [ʌn'presɪdentɪd] 美 [ʌn'presɪdentɪd]
中文释义	adj.空前的；前所未有的
英语例句	(1) We are seeing unemployment on an unprecedented scale. (2) His statement made an unprecedented splash. (3) The air crash caused an unprecedented number of deaths. (4) Some economists showed their anxiety on unprecedented level of unemployment. (5) Our school faced unprecedented difficulties.
中文例句	(1) 我们现在正经历规模空前的失业现象。 (2) 他的声明引起了空前的轰动。 (3) 这次空难的死亡人数是空前的。 (4) 一些经济学家对失业率达到前所未有的程度表示忧虑。 (5) 我们学校碰到了前所未有的困难。
vocabulary简明	Something that is unprecedented is not known, experienced, or done before. If you've never gone on a family beach vacation but you're planning one now, you could refer to it as an unprecedented decision.
vocabulary扩展	The root of this word is precedent, a noun referring to something done or said that is used as an example to be followed in the future. In law, a precedent is a legal decision that is used as a standard in future cases. So the adjective unprecedented, meaning "having no precedent," was formed from the prefix un- "not," the noun precedent, and the suffix –ed "having."
柯林斯解释	1 [ADJ 形容词]前所未有的；空前的；没有先例的 If something is unprecedented, it has never happened before. Such a move is rare, but not unprecedented... 这种做法很罕见，但也不是没有先例的。 In 1987 the Socialists took the unprecedented step of appointing a civilian to command the force. 1987年，社会党人史无前例地任命了一位非军队出身的人来指挥军队。 2 [ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]（质量、数量、规模）很高的，很大的 If you describe something as unprecedented, you are emphasizing that it is very great in quality, amount, or scale. [usu ADJ n] [emphasis] Each home boasts an unprecedented level of quality throughout... 每家的质量都堪称一流。 The scheme has been hailed as an unprecedented success. 这个计划广受好评，被认为是一个巨大的成功。

Unprecedented Precedent Scale Level Noun 英 ʌn'presɪdentɪd] 美 ʌn'presɪdentɪd