subgrade machine路基: bed; roadbed; subgrade; subs ...坏: bad路基: bed; roadbed; subgrade; substructure堤岸,路基: embankment低路基: shallow fill下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:路基坏，即可在微信中查询翻译
