@pikurusu おっぱいをたくさん吸って---『口輪筋』を鍛えましょう!!!https://www.miki-dental.info/miki-dental-staff-voice/2015/09/post-950.html>赤ちゃんは、母乳を飲むとき吸うのではなく唇を使ってお母さんの乳輪をつまんでいるそうです。
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