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Jyutping lung4 mun4 gaa3
Pinyin lóng mén jià

Definitions (Wiktionary)
  1. noun
    gantry (framework of steel bars resting on side supports to bridge over or around something)

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Jyutping lung4 mun4 gaa2
Pinyin lóng mén jià

Definitions (粵典–words.hk)
  1. 名詞
    龍​門​嘅​框架
    goal gantry
  2. 名詞
    龍門架​狀​嘅​物​體
    gantry