短語(yǔ)詞組短語(yǔ)alluvial l gold 砂金;沖積砂金alluvial type gold placer 沖積砂金鑛牀alluvial gold deposit 沙金鑛ALLUVIAL GOLD DUST 金粉alluvial gold production 砂金生産alluvial gold mine 砂金鑛山washing of alluvial gold 砂金洗選separation of alluvial gold 砂金分選alluvial gold mining 砂金鑛開(kāi)採(cǎi) 返回 alluvial gold