英语词汇“Gravelly-sand over an iron-pan and gravel layer”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	Gravelly-sand over an iron-pan and gravel layer
释义	Gravelly-sand over an iron-pan and gravel layer. 沙砾覆于铁质土层与砂砾层之上。
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