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Jyutping sai3 kwan2 hok6
Pinyin xì jùn xué

Definitions (Wiktionary)
  1. noun
    bacteriology

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Jyutping sai3 kwan2 hok6
Pinyin xì jūn xué

Definitions (CC-CANTO)
  1. Bacteriology
Definitions (Wiktionary)
  1. noun
    bacteriology