Not all casualties can necessarily be prevented一but by coordinating across local, state, and even national borders, officials hope that the worst-case scenario can be averted.
2019年12月六级真题（第一套）阅读 Section C
柯林斯高阶英汉双解学习词典释义
N-COUNT
(战争、意外中的)伤亡人员
A casualty is a person who is injured or killed in a war or in an accident.