noun ダウンロード 🔗共有 土手, 川岸 A sloped side of a river acting as a barrier between the water and level ground to either side. Examples : "The family spread their picnic blanket on the grassy riverbank. " 家族は草が生い茂る川岸にピクニックの毛布を広げた。 geography environment nature place AIとチャット語彙ゲーム読解練習