名词
中文翻译：寿命水平
同义词：
['lifespan', 'longevity', 'life expectancy']
例句：
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1.The study found that the average lifespan of humans has increased by 5 years in the last century.
研究发现，人类的平均寿命在过去一个世纪里增加了5年。
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2. Longevity is a complex topic that requires careful consideration of various factors.
长寿是一个复杂的主题，需要仔细考虑各种因素。
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3. The researcher analyzed the data to determine the longevity level of the population.
研究者分析了数据，以确定人口的寿命水平。