noun 下载 🔗分享 冲积,淤积地。 The increase in the area of land due to the deposition of sediment (alluvium) by a river. Examples : "The farmer benefited from the alluvion along the riverbank, gaining several extra feet of fertile land each year. " 这位农民受益于河岸的冲积作用,每年都获得额外的几英尺肥沃土地。 geology geography environment 与AI对话词汇游戏阅读练习