casualty rate的用法和樣例：
例句
- The accident rate in deep-sea diving is comparable with that in other high risk occupations.
深海潛水業的事故率與其他高風險職業相仿。 - Although the accident rate per mile is only about half the rate for passenger cars, a life spent on major highways can never be really safe.
儘管每英里的事故率只是客車的二分之一，但成天在各大高速路上生活不會擁有真正的安全。
