https://atlantak.com/%eb%b6%80%eb%aa%a8%ea%b0%80-%ec%95%84%ea%b8%b0%ec%97%90%ea%b2%8c-%ea%b1%b4%eb%84%a4%eb%8a%94-%ec%95%84%ea%b8%b0%eb%a7%90%ec%9d%80-%eb%a7%8c%ea%b5%ad%ea%b3%b5%ed%86%b5%ec%96%b4/
부모가 아기에게 건네는 '아기말'은 만국공통어