| 单词 | 砂矿 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔lead〕A deposit of gold ore in an old riverbed.富金砂矿：古河床里的金砂矿床美国传统〔placer mining〕The obtaining of minerals from placers by washing or dredging.采砂矿：通过清洗或网捞从砂矿中获得矿物美国传统〔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〔placer〕A place where a placer deposit is washed to extract its mineral content.砂矿开采地：一个用来清洗出有用矿物的砂矿开采地美国传统 |
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