ruinous floods

• 灾难性的洪水

ruinous floods的用法和样例：

例句

1. In 1975, the floods in that area made 233,000 people homeless.
   一九七五年该地区的洪水使得二十三万三千人无家可归。
2. Periodic major floods had thinned out the population.
   周期性的洪水泛滥使人烟稀少。