| unprecedented | |
| 级别 | 第8级 |
| 音标 | [ ʌnˈpresɪdentɪd ] |
| 解释 | adj.无前例的，新奇的 |
| 英英释义 | never having happened or existed in the past |
| 发音 |  |
| 例句 |
1. The air crash caused an unprecedented number of deaths. 这次空难的死亡人数是空前的。 2. A flood of this sort is really unprecedented. 这样大的洪水真是十年九不遇。 |
