最終更新日：2025/12/07
Exposure to sunlight converts 7-dehydrocholesterol in the skin into vitamin D3, an essential step in maintaining healthy bones.
正解を見る
Exposure to sunlight converts 7-dehydrocholesterol in the skin into vitamin D3, an essential step in maintaining healthy bones.
音声機能が動作しない場合はこちらをご確認ください
編集履歴（0）
