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百度健康养生焦点新闻
两性养生：性爱一次消耗男人多少“精”力？
Feb 16th 2013, 17:53

　　现代医学对精液的分析发现，这几毫升的精液中，大约存活着两亿个左右的精子。生化分析的结果是，精液的百分之九十八是水分，其余约百分之二是蛋白质和核糖核酸，还有极少的微量元素，如锌。

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