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

词汇	roadbed
释义	road·bed AHD[rōdʹbĕd'] D.J.[ˈrəʊdˌbed]K.K.[ˈrodˌbɛd]n.（名词） The foundation upon which the ties, rails, and ballast of a railroad are laid.路基：其上可铺铁道的枕木、铁轨和道碴的地基 A layer of ballast directly under the ties.道碴：直接铺在枕木下的石碴 The foundation and surface of a road.公路地基和公路路面
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