Placer

(noun.) an alluvial deposit that contains particles of some valuable mineral.

录入:文斯

• Gold, or placer digging as it was called, was at its height. 尤利西斯·格兰特. U．S．格兰特的个人回忆录.
• The whole placer would not give more than one and one-quarter cents per cubic yard. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• I had several car-loads of different placer sands sent to me and proved I could do it. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

编辑:塞格雷