死亡率的用法和样例：
例句
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如果这种病传播开来，医生们担心死亡率将会很高。
If this disease spreads, the doctors fear that there'll be a high mortality. -
他们使伤寒病人的死亡率降低了一半，这是他们最感骄傲的事之一。
It is one of their proudest boasts that they have halved the death rate from typhoid. -
某些发展中国家的婴儿死亡率仍然很高。
Infant mortality is still very high in some developing countries. -
1986年的婴儿死亡率为生育成活率的千分之二十。
Infant mortality (ie The rate at which babies die) was 20 deaths per thousand live births in 1986.
