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Jyutping ji6 jyut3 on1
Pinyin èr yǐ ān

Definitions (Wiktionary)
  1. noun
    diethylamine

[---]

Jyutping ji6 jyut3 on1
Pinyin èr yǐ àn

Definitions (Wiktionary)
  1. noun
    diethylamine