| 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
|