An unforeseen event.

不期之事。

An accident, esp. if resulting in bodily injury or death.

不测；意外；肇事(尤指导致伤亡者)。

Losses in general, caused by death, wounds, illness, desertion, or discharge.

【军】(因伤亡、疾病、私逃、革职等所致之)人员损失。

Person injured or killed in an accident.

意外事件的伤亡者。