noun ダウンロード 🔗共有 睾丸 The male sex and endocrine gland, found in some types of animals, that produces sperm and male sex hormones, including the steroid testosterone. Examples : "The doctor examined the patient's testicles to check for any abnormalities. " 医者は異常がないか確認するために、患者の睾丸を診察しました。 anatomy organ physiology sex biology medicine body animal human AIとチャット語彙ゲーム読解練習