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Jyutping pou2 on1 syun1
Pinyin pú ān suān

Definitions (Wiktionary)
  1. noun, Taiwan
    proline
    (syn.) 脯氨酸

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Jyutping pou2 on1 syun1
Pinyin pú àn suān

Definitions (Wiktionary)
  1. noun, Taiwan
    proline
    (syn.) 脯氨酸