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1. Oxford Dictionary

   expectorant

   • IPA[ɪkˈspɛkt(ə)rənt]

   英式

   • n.
     a medicine which promotes the secretion of sputum by the air passages, used to treat coughs.

   • noun: expectorant, plural noun: expectorants

2. • 更多解釋

   expectorant

   • IPA[ikˈspektərənt]

   美式

   • n.
     a medicine which promotes the secretion of sputum by the air passages, used to treat coughs.

   Oxford American Dictionary