| 释义 |
| | | | ADJ | | | | | /ʌnˈpresɪˌdentɪd/ | | | | | | never having happened or existed before 前所未有的；史无前例的 | The government took the unprecedented step of releasing confidential correspondence. 政府迈出史无前例的一步，公开了机密信件。 | | | a | the greatest in size , amount , degree etc that has ever been known （大小、数量、程度等）前所未知的，空前的 | | The flood waters have risen to unprecedented levels. 洪水已升至历史最高水位。 | | | | |