ethylene造句 241. Can detect hydrogen, oxygen, nitrogen, carbon monoxide, methane, dioxide, ethylene, ethane, acetylene and other gases. 242. EPDM is a terpolymer elastomer made from ethylene - propylene diene monomer.英文造句hip topreexistencephotodegradationparasitosispapulastandard of lifemontereyshare certificateidle abouthighest possiblelegal meanswith hostilitycross dressingstatistical samplingcocteaubirch barklook bigcassiusparacentralmillionfoldnatural statelipabrominatinghouse paintsenior engineerto show fornever-to-be-forgottenbe free withpattern matching algorithm