您要查找的是不是：
- The flood had been caused by unprecedented rainfall. 洪水是由于前所未有的大量降雨造成的。
- A flood of this sort is really unprecedented. 这样大的洪水真是十年九不遇。
- Of course, it was an unprecedented mission. 当然有，这可是一项空前的任务呢。
- The mean yearly rainfall is20 inches. 每年平均降雨量是二十英寸。
- This area has very low rainfall. 这个地区雨量稀少。
- Expenditure raced up to an unprecedented level. 开支剧增，达到空前的水平。
- The rate of growth was unprecedented. 这个成长率是前所未有的。
- The rainfall averages 36 inches a year. 年降雨量平均为36英寸。
- unprecedented rainfall 前所未有的降雨量
- Excessive rainfall had made the harvest impossible. 雨量过多，丰收已经不可能了。
- There was another rainfall early this morning. 今天清晨又下了一场雨。
- The rainfall there averages 300 mm a year. 那儿的年降雨量平均每年为三百毫米。
- That is a situation unprecedented in the history of the school. 这是该校有史以来未曾出现过的情况。
- Characterized by heavy rainfall; rainy. 多雨的以雨量很大为特征的; 多雨的
- The enemy mad bombardment caused unprecedented death and destruction in the country. 敌人的狂轰滥炸在这个国家造成了空前的死亡和破坏。
- Expenditure raced up and up to an unprecedented level. 消费不断地急剧上升，达到了空前的水准。
- We are seeing unemployment on an unprecedented scale. 我们现在正经历规模空前的失业现象。
- Ample sunshine and rainfall are bringing the crops on nicely. 充足的阳光和雨水正使庄稼茁壮地生长。
- Some economists showed their anxiety on unprecedented level of unemployment. 一些经济学家对失业率达到前所未有的程度表示忧虑。
- In an unprecedented move, the tribunal ask the witness to sing a song. 作为史无前例的步骤，法庭要求证人唱一首歌。
