Even in cultures without access to mass media, the optimum waist-to-hip ratio for women is around 0.7, which corresponds most closely to an hourglass shape, and is linked to fertility.
即使在和大众传媒没有交集的文化中,女性腰围与臀围的最佳比例也是在0.7左右,近似于沙漏形状,并与生育有关。
When fertility is high and a country is young (median age below 20), there are huge numbers of children and the overall dependency ratio is high.
一个国家生育率高,表示这个国家很年轻(中位年龄在20岁以下),小孩数量庞大,依赖性比例相当高;
Scientists concluded that such a small ratio was considered good for a woman's health and resulted in high fertility.
科学家总结认为这样的比例对女性健康和生育有利。
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