亚洲国产精品视频中文字幕,毛片亚洲AV无码精品国产午夜,亚洲国产精品色婷婷,国产综合日韩精品第16页

單詞乎

roadbed

音標['r?udbed]
roadbed是什么意思、roadbed怎么讀

roadbed漢語翻譯

n. 路基

roadbed英語解釋

名詞 roadbed:

  1. a bed supporting a road

roadbed例句

  1. A foundation of crushed rock or a similar substance for a road or railroad; a roadbed.
    路基碎石或類似物質做的道路或鐵路的基礎; 路基

roadbed詳細解釋

road.bed

n.（名詞）

The foundation upon which the ties, rails, and ballast of a railroad are laid.
路基：其上可鋪鐵道的枕木、鐵軌和道碴的地基
A layer of ballast directly under the ties.
道碴：直接鋪在枕木下的石碴
The foundation and surface of a road.
公路地基和公路路面

0
糾錯