noun ダウンロード 🔗共有 乳房 (chiefly in the plural) A mammary gland on a domestic mammal with more than two breasts. Examples : "The farmer checked the sow's dugs to make sure the piglets were nursing properly. " 農夫は子豚がきちんと授乳しているか確認するために、雌豚の乳房を調べた。 animal body organ anatomy physiology biology AIとチャット語彙ゲーム読解練習