1. The high mortality rate in the region is a cause for concern.
该地区高死亡率令人担忧。

2. The mortality rate for heart disease has been decreasing over the past decade.
心脏病的死亡率在过去十年中有所下降。

3. The study found a correlation between smoking and increased mortalities from lung cancer.
研究发现吸烟与肺癌死亡率增加之间存在关联。

4. The mortality rate for infants in developing countries is still unacceptably high.
发展中国家婴儿死亡率仍然高得令人无法接受。

5. The government has implemented measures to reduce mortalities from traffic accidents.
政府已经采取措施减少交通事故的死亡人数。

6. The hospital has been able to lower mortalities from infections through improved hygiene practices.
通过改善卫生实践，医院已经成功降低了感染病的死亡率。