alluvion
英[ə\'lu:vjən]
美[ə\'luvjən]
基本释义
- n.
- 沙洲，冲积地; 冲积层
英英释义
Noun
1. gradual formation of new land, by recession of the sea or deposit of sediment
2. the rising of a body of water and its overflowing onto normally dry land;
"plains fertilized by annual inundations"
3. clay or silt or gravel carried by rushing streams and deposited where the stream slows down