不会吧不会吧
楼主说不定还指着这个上十大呢
我来炒一炒
In humans, the natural ratio between males and females at birth is slightly biased towards the male sex, being estimated to be about 1.05 [2] or 1.06 [3] or within a narrow range from 1.03 to 1.06 [4] males/per female born.
为啥出生时男性和女性之间的自然比例偏向于男性呢
好气哦