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:
- a bed supporting a road
roadbed例句
- 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(zhì)做的道路或鐵路的基礎(chǔ); 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
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