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Jyutping gu3 daam6 kwan2
Pinyin gù dàn jùn

Definitions (Wiktionary)
  1. noun
    nitrogen-fixing bacteria
  2. noun
    Azotobacter

[---]

Jyutping gu3 daam6 kwan2
Pinyin gù dàn jūn

Definitions (Wiktionary)
  1. noun
    nitrogen-fixing bacteria
  2. noun
    Azotobacter