homicide rate的用法和樣例：
例句
- South Korea grimly boasts the highest suicide rate in the world.
南韓的自殺率是全球最高。 - I have seen so many parents trying to hammer home the importance of diligence that I am surprised the suicide rate of high-schoolers is not higher.
我見(jiàn)過(guò)太多的家長(cháng)想把勤奮的重要性灌輸給孩子，是我驚奇的是高中生的自殺率并沒(méi)有升高。
