伤亡 in English:

We've had a few casualties

Many of the casualties of the bomb attack were women.

Casualties are said to total up to 1,000.

Numerous violent and sudden casualties among C++ developers are caused by segmentation faults every year.

After a battle casualties are usually heavy.

An unbreakable walnut in Bern has taken several casualties: 17 nutcrackers, 29 teeth, and a hammer.