英语词汇“subgrade”是什么意思，“subgrade”的读音、用法及例句翻译-烛光网

词汇	subgrade
释义	sub·grade AHD[sŭbʹgrād'] D.J.[ˈsʌbˌgreɪd]K.K.[ˈsʌbˌgred]n.（名词） The level layer of rock or earth upon which the foundation of a road or railway is laid.路基，地基：在其上铺设路的基础或铁路道碴的岩石或泥土的水平层
随便看	prodrome prodromes prodrug prods Prods produce produce produced producer producer producer gas producer goods producer price index producers produces producing product product producted producting production production production line productions productive

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