noun 下载 🔗分享 河床，故道。 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. " 在旱灾期间，河床干涸开裂，人们可以很容易地穿过谷底。 geography geology environment nature 与AI对话词汇游戏阅读练习
