路基 (lù jī) — massicciata stradale; sottofondo (di una strada o ferrovia)

Definizione

Esempi

• 这条铁路的路基是用碎石和沙子铺成的。
  Zhè tiáo tiě lù de lù jī shì yòng suì shí hé shā zi pū chéng de.
  The roadbed of this railway is made of gravel and sand.
• 施工队正在加固路基，防止路面塌陷。
  Shī gōng duì zhèng zài jiā gù lù jī, fáng zhǐ lù miàn tā xiàn.
  The construction team is reinforcing the subgrade to prevent road collapse.
• 高速公路的路基必须达到一定的压实度。
  Gāo sù gōng lù de lù jī bì xū dá dào yí dìng de yā shí dù.
  The subgrade of the expressway must reach a certain compaction level.