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Jyutping baak6 tin1 ngo4
Pinyin bái tiān é

Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. noun
    swan
    (syn.) 鴻, 鸿鹄, 鸿, 天鹅, 鹄, 鴻鵠, 天鵝, 鵠

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Jyutping baak6 tin1 ngo4
Pinyin bāi2tian1e

Definitions (CC-CANTO)
  1. white swan [written and colloquial]; to nag all day long [colloquial]