单词 | placer |
例句 | DEFINITIVE EXAMPLES 权威例句〔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 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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