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Jyutping niu5 leoi6 hok6
Pinyin niǎo lèi xué

Definitions (CC-CEDICT)
  1. ornithology
  2. study of birds
Definitions (Wiktionary)
  1. noun
    ornithology
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)