ephed·rine /ɪˈfɛdrən, ||ˈɛfədrən/
  麻黃素
  ephed·rine /ɪˈfɛdrən, , ˈɛfədrən/ 名詞
  ephedrine
       n : white odorless powdered or crystalline alkaloid from plants
           of the genus Ephedra (especially Ephedra sinica) or made
           synthetically; used as a bronchodilator to treat
           bronchitis and asthma