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Jyutping gwan2 gong3
Pinyin gǔn gāng

Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

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Jyutping gwan2 gung3
Pinyin gǔn gàng

Definitions (Wiktionary)
  1. noun
    roller; rolling bar