noun 下载 🔗分享 崩积层,坡积物。 A loose accumulation of rock and soil debris at the foot of a slope Examples : "The colluviums at the base of the hill made it difficult to build the new school playground. " 山脚下的崩积层让建造新的学校操场变得很困难。 geology environment geography 与AI对话词汇游戏阅读练习