As time went on,people came to be aware of the seriousness of China’s population.
随着岁月
流
,
逐渐地认识到中国
口问题
严重性。
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Humans have been asking this question for thousands of years, and recently, it's becoming clearer and clearer to scientists that the differences between people's rates of aging lie in the complex interactions among genes, social relationships, environments and lifestyles.
几千年来,人类一直
问这个问题,最近,科学家越来越清楚地认识到,人们衰老速度的差异
于基因、社会关系、环境和生活方式之间的复杂相互作用。