the gender ratio at birth的意思|示意
美 / /
英 / /
出生时的性别比例
the gender ratio at birth的网络常见释义
出生性别比例 ... ……使问题更加严重 the problem has been exacerbated by … 出生性别比例 the gender ratio at birth 与(……的)最理想数字/比率差距甚远well off the optimal figure of … ...