noun 下载 🔗分享 克拉通,陆核 A part of the Earth’s crust that has survived the splitting and merging of continents. Examples : "The ancient cratons of Africa form the stable foundation upon which many of its modern landscapes rest. " 非洲古老的克拉通构成了其现代地貌赖以存在的稳定基石。 geology geography world continent 与AI对话词汇游戏阅读练习