一、肚脐是脐带残端的“遗迹”
要说肚脐是怎么形成的,就要先说说脐带。我们都知道每
%B3%F6%C7%A7%CF%B4%C5%C6%99%43%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%B3%F6%C7%A7%CF%B4%C5%C6%99%43%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%B3%F6%C7%A7%CF%B4%C5%C6%99%43%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF
%B3%F6%C7%A7%CF%B4%C5%C6%99%43%2D%A1%BE%40%31%33%37%31%30%30%37%39%36%38%38%A1%BF




