N-UNCOUNT
洪水泛濫;水災
If flooding occurs, an area of land that is usually dry is covered with water after heavy rain or after a river or lake flows over its banks.
例句
The flooding, caused by three days of torrential rain, is the worst in sixty-five years.
連續 3 天的傾盆大雨引發的洪水是 65 年來最嚴重的一次。