severity 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(yè)的事故率與其他高風(fēng)險職業(yè)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.
盡管每英里的事故率只是客車(chē)的二分之一，但成天在各大高速路上生活不會(huì )擁有真正的安全。
