注目コメント算出アルゴリズムの一部にLINEヤフー株式会社の「建設的コメント順位付けモデルAPI」を使用しています
In 1816, French physician René Laennec invented an instrument that allowed doctors to listen to h... In 1816, French physician René Laennec invented an instrument that allowed doctors to listen to human hearts and lungs. That device — a stethoscope — eventually evolved from a simple…
2015/08/01 リンク