noun ダウンロード 🔗共有 川床 The path where a river runs, or where a river once ran; the bottom earthen part of a river, not including the riverbanks. Examples : "During the drought, the riverbeds became dry and cracked, making it easy to walk across the valley floor. " 干ばつの間、川床は乾燥してひび割れ、谷底を歩きやすくなりました。 geography geology environment nature AIとチャット語彙ゲーム読解練習
