noun ダウンロード 🔗共有 体腔 A fluid-filled cavity within the body of an animal. The digestive system is suspended within the cavity, which is lined by a tissue called the peritoneum. Examples : "The earthworm's digestive system is located inside its coelom, a fluid-filled cavity that helps protect its organs. " ミミズの消化器系は、その体腔内に位置しており、これはその臓器を保護するのに役立つ体液で満たされた空洞です。 anatomy biology organism animal body organ physiology AIとチャット語彙ゲーム読解練習