| 单词 | alluvial |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔accretion〕An increase of land along the shores of a body of water, as by alluvial deposit.冲积层：如因冲积沉淀而使土地近水的地方扩大美国传统〔alluvial〕They were looking for water, but stumbled upon one of the richest shallow alluvial gold deposits ever found.他们当时在找水, 却意外发现了迄今为止储量最为丰富的浅层冲积砂金矿床之一。外研社新世纪〔delta〕A usually triangular alluvial deposit at the mouth of a river.三角洲：河口常见的三角形沉淀淤积地带美国传统〔placer〕A glacial or alluvial deposit of sand or gravel containing eroded particles of valuable minerals.砂矿，砂积矿床：一种砂砾或碎石的冰河沉积物或冲积沉积物，包括有价值的矿物成份美国传统〔towhead〕A sandbar or a low-lying alluvial island in a river, especially one with a stand of trees.沙洲：沙洲或河流中略高出水面的冲积岛，尤指有一片树木的美国传统Some alluvial deposits are a rich source of diamonds.一些沉积矿床富含钻石。剑桥国际 |
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