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Jyutping goi2 dou6
Pinyin gǎi dào

Definitions (CC-CEDICT)
  1. to change route
  2. to divert (a road or a watercourse)
Definitions (粵典–words.hk)
  1. 動詞
    本身​條路​而家​唔​行得​,​要​轉用​第二​條路
    to change one's route
    • 交通改道
      交通改道
      traffic diversion
  2. 動詞
    將​河流​嘅​流向​或​河道​人工​改變​,​好似​引流​至​其他​地方​、​分流​、​擴闊​河​牀​等等​,​理由​有​集水​、​防止​泛濫​、​農業​發展​、​建壩​等等​;​水利工程​嘅​一​種
    to change the course of a river artificially
Definitions (Wiktionary)
  1. verb
    to change course or route (of people, vehicles, rivers, etc.)
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    改道
    改道
    goi2 dou6
    • to change one's route; to change the river course
  2. Cantonese
    交通改道
    交通改道
    • traffic diversion