Definition: a large amount of water covering an area that is usually dry Level: B1
洪水过后，水位花了数周才下降。
After the ___flood, it took weeks for the water level to go down.
大雨导致该地区发生多起洪水。
The heavy rain caused many ___floods in the region.
暴风雨后，突如其来的洪水淹没了街道。
A sudden ___flood covered the streets after the storm.
