eth·ene /ˈɛˌθin/
  乙烯
  eth·ene /ˈɛθˌɪn/ 名詞
  乙烯,1,2-亞乙基
  Eth·ene n. Chem. Ethylene; olefiant gas.
  ◄ ►
  ethene
       n : a flammable colorless gaseous alkene; obtained from
           petroleum and natural gas and used in manufacturing many
           other chemicals; sometimes used as an anesthetic [syn: ethylene]