nor·epi·neph·rine /ˈnɔrˌɛpəˈnɛfrən/
  荷爾蒙一種
  nor·epi·neph·rine /ˌnɔrˌɛpəˈnɛfrən, rɪn/ 名詞
  去甲腎上腺素,降正腎上腺素(舊名正腎上腺素)
  norepinephrine
       n : a catecholamine precursor of epinephrine that is secreted by
           the adrenal medulla and also released at synapses [syn: noradrenaline]