The State adopts a comprehensive measure to control the size and raise the general quality of the population.
国家采取综合措施，控制人口数量，提高人口素质。
Aqristogensis has become main content of enviroment and health study to control population and raise quality in the future, even is a big problem concerning human prospects .
为控制人口数量，提高人口素质，优生也成为环境与健康研究的主要内容。
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