noun ダウンロード 🔗共有 肺炎 An acute or chronic inflammation of the lungs caused by viruses, bacteria or other microorganisms, or sometimes by physical or chemical irritants. Examples : "Grandmother developed pneumonia after a bad cold. " 祖母はひどい風邪の後、肺炎を発症しました。 medicine disease microorganism virus biology organism anatomy AIとチャット語彙ゲーム読解練習