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Jyutping wong4 sin1 on1
Pinyin huáng xiān ān

Definitions (Wiktionary)
  1. noun, Hong-Kong, Mainland-China
    sulfonamide
    (syn.) 磺胺, 磺醯胺

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Jyutping wong4 sin1 on1
Pinyin huáng xiān àn

Definitions (Wiktionary)
  1. noun, Hong-Kong, Mainland-China
    sulfonamide
    (syn.) 磺胺, 磺醯胺