noun🔗Share冲积土, alluvial deposit Soil, clay, silt or gravel deposited by flowing water, as it slows, in a river bed, delta, estuary or flood plain"The fertile farmland near the river is made up of rich alluvium deposited over centuries. "河流附近的肥沃农田由几个世纪以来沉积下来的肥沃冲积土构成。geologyenvironmentgeographyagriculturematerialChat with AIVocabulary GamePractice Reading