名词
中文翻译：死亡率
同义词：
['mortality rate', 'mortality例句：1. The study found that the death rate in the area was higher than expected.（研究发现该地区的死亡率高于预期。）']
例句：
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1. The study found that the death rate in the area was higher than expected.
研究发现该地区的死亡率高于预期。
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2.The government is working to reduce the death rate of malaria.
政府正在努力降低疟疾的死亡率。
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3. The new vaccine has shown a significant reduction in death rate compared to previous ones.
新疫苗与之前的相比，死亡率显著下降。