A child secretly exchanged for another in infancy .
从图表可以看出，在图中所示的幼年期间，女性一般比男性结婚较早。在幼年时期背地里被人偷换的孩子。
It can be seen from the graph that women generally got married at an earlier age than men in the 87 years shown in the graph . a child secretly exchanged for another in infancy .
被偷换的孩子