inundate
词根词缀：
abound v. 充满
ab 加强 + ound〔= und〕溢出；波动 → 溢出 → 充满
abundant adj. 丰富的
ab 加强 + und 溢出；波动 + ant …的 →〔多得〕溢出来 → 丰富的
fecundity n. 多产
fec 做 + und 溢出；波动 + ity 具备某种性质，状况 → 出产的〔粮食〕溢出 → 多产
inundate v. 淹没
in 使… + und 溢出；波动 + ate 使… → 使溢出 → 淹没
redound v. 回流；起作用
red〔= re 回〕+ ound〔= und〕溢出；波动 → 波动回来 → 回流
redundant adj. 多余的
redund 回流 + ant …的 → 回流的 → 多余的
undulate v. 波动
und 溢出；波动 + ulate 使 → 波动
数据来源：新东方英语词汇速记大全
相关例句：
The Blue Nile rises in the mountains of Ethiopia, where seasonal rains cause the annual floods that inundate the Nile Valley with water and silt.
青尼罗河发源于埃塞俄比亚的群山之中，那里每逢雨季，山洪暴发，大量的雨水和泥沙注入尼罗河河谷。
The major reasons for the inundate modern international terrorism are: wrangling over nationalities, religions and territories;
现代国际恐怖主义泛滥的主要原因是民族、宗教、领土纷争；
Their neighborhood is being inundated by the rising waters of the Colorado River.
他们的街区正被科罗拉多河上涨的河水淹没。
As many as 1,000 soldiers and engineers are trying desperately to dig channels through the mud and rocks, using explosives and mechanical equipment airlifted to the site, to allow water to drain away without causing a catastrophic failure that could inundate more than 1m people living downstream.
利用炸药和空运至此的机械设备，将近1000名士兵与工程技术人员正在力图在泥石之中挖出一条沟渠，引流泻洪，避免出现可能水淹下游100万居民的灾难性溃堤。
Her office was inundated with requests for tickets
她所在的售票处收到铺天盖地的购票请求。
Deluge: To overrun with water; inundate.
淹没：被水淹没；使泛滥。