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Jyutping gwong1 on1 syun1
Pinyin guāng ān suān

Definitions (Wiktionary)
  1. noun, Taiwan
    cystine
    (syn.) 胱氨酸

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Jyutping gwong1 on1 syun1
Pinyin guāng àn suān

Definitions (Wiktionary)
  1. noun, Taiwan
    cystine
    (syn.) 胱氨酸