柯林斯詞典unprecedented /?n?pr?s??d?nt?d/ 1. ADJ If something is unprecedented, it has never happened before. 史無前例的 Such a move is rare, but not unprecedented. 這樣的舉動少見，但并非從來沒有過。2. ADJ If you describe something as unprecedented, you are emphasizing that it is very great in quality, amount, or scale. (質量、數(shù)量或規(guī)模) 空前的[強調] The mission has been hailed as an unprecedented success. 這次使命已被宣布為一次空前的成功。 返回 unprecedented劍橋詞典never having happened or existed in the past 史無前例的，空前的；絕無僅有的 This century has witnessed environmental destruction on an unprecedented scale . 環(huán)境在本世紀遭到了空前的破壞。 例句 She took the unprecedented step of revealing the truth about the situation .Such an event was unprecedented in the 20th century .Unemployment has reached an unprecedented level .This situation is unprecedented in 21st-century life .Crime has risen on an unprecedented scale . 返回 unprecedented