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来源：雅诚德英语网
In "the Descent of Man", he referred to studies showing that among children born out of wedlock there were more girls than boys.
他在《人类起源》中提到过一些研究，显示非婚生子女中女孩多于男孩。
In "the Descent of Man", he referred to studies showing that among children born out of wedlock there were more girls than boys.
他在《人类起源》中提到过一些研究，显示非婚生子女中女孩多于男孩。