伤亡者的英文：
casualty

参考例句：

The total number of casualties
伤亡者总数

We carried the dead and(the)wounded off the battlefield.
我们把伤亡者抬出了战场.

casualty是什么意思：
n. 意外事故；伤亡人员；受害者；急诊室

It was a casualty of the recent spending cuts.
它是近来削减经费开支的受害者。

They resisted desperately but suffered heavy casualties
他们拼命抵抗,但遭受了严重伤亡。

It was impossible to state with accuracy the number of casualties.
要正确说出伤亡人数是不可能的。

There will be at worst a few casualties in the terrible accident.
在可怕的意外中最坏仅有少数人伤亡。

They rushed her to Casualty but she was dead on arrival. (BrE)