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1. Oxford Dictionary

   propionic acid

   • IPA[ˌprəʊpɪˈɒnɪk]

   英式

   • n.
     a colourless pungent liquid organic acid produced in some forms of fermentation and used for inhibiting the growth of mould in bread.

   • noun: propionic acid

2. • 更多解釋

   propionic acid

   • IPA[ˌprōpēˌänik ˈasəd]

   美式

   • n.
     a colorless pungent liquid organic acid produced in some forms of fermentation and used for ...

   Oxford American Dictionary