防洪的英文：
(n) flood control

参考例句：

The floodgate is closed to control the flow of water.
为了控制水流，防洪闸门关闭了。

The floodgate was closed to control the flow of water.
〞为了控制水流,防洪闸门关闭了。〞

These earth dykes cannot hold against floods.
这些土筑堤埝根本起不到防洪作用。

People have been mobilised to build defences and drain flooded land as heavy rains continue to fall.
大雨还在继续下，人们已经被动员起来修筑防洪工事，为遭淹田地排水。

flood是什么意思：
n. 洪水，水灾，大批，大量
v. 淹没，泛滥，大量涌入，挤满，充满，照进，（使）溢流

flood lubrication
溢流式润滑

The land was desolated by floods.
洪水使田野荒芜。

Floods brought destruction to the vally.
洪水给山谷造了大灾害。

The accident unlocked a flood of tears.
这个意外让他的眼泪流了出来。

We are sympathetic with the flood sufferers.
我们同情水灾受难者。

control是什么意思：
v. 控制，管理；抑制；限制
n. 管理权；控制；管理；操纵装置

control experiment
ph.1. 核对实验(实证某一变数单独对整个系统可能发生的影响)

controlled dictation
听写测验

control footing
控制合计

pulling controller
单晶拉制电子控制器

controlled drug
ph.1. 受法律管制的药物(或毒品)