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dirt bed
archit. 岩夹石层
eng.geol. 泥土层; 夹矸层
tech. 夹石层; 淤泥层; 有机质层; 污层
dirt-bed ['dɜ:tbed]
gen. 淤泥层; 腐殖层; 夹石层; 杂质层
el. 淤泥河床
met. 泥土层

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