洪灾的英文：
flood disaster
flood damage

参考例句：

They are requesting air drops of foodstuffs to the flooded areas.
他们要求对洪灾地区空投食品。

After the flood, many people contributed food and clothing for the relief of the victims.
洪灾后，许多人捐助食物和衣物以赈济灾民。

The Government hurled all possible efforts into rebuilding the flooded area
政府投入了一切可能的力量来帮助重建受洪灾的地区。

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。

disaster是什么意思：
n. 灾难，不幸；彻底的失败

to meet with disaster; to suffer disaster; to smart for
遭殃

Knowledge of the disaster soon spread.
灾难的消息很快传开了。

Let's forget the disaster.
让我们不要再把那场灾难放在心上了。

damage是什么意思：
n. 损害；伤害；赔偿金
v. 损害，损坏

respond in damages
承担赔偿责任,vt.1. 以...回答[+that]n.1. 【宗】(会众对牧师的)应答,唱和,2. 【建】壁联

The majority of the damage is easy to repair.
这次的损害大部分容易补救。

These goods were damaged in transit.
这些货物在运输过程中损坏了。