phos·gene /ˈfɑzˌʤin/
  光氣
  phos·gene /ˈfɑzˌʤɪn/ 名詞
  光氣,碳氯
  Phos·gene a.  Old Chem. Producing, or produced by, the action of light; -- used specifically to designate a gas also called carbonyl chloride.  See phosgene, n., and Carbonyl.
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  phosgene
       n : a colorless poisonous gas that smells like new-mown hay;
           used in chemical warfare