三氟丙炔和全氟丁烯 -2 在这个区域也出现双重谱带.Duplication of bands in this region is also shown by trifluoropropyne and perfluoro 2 - butene.三氟丙炔和全氟丁烯 -2 在这个区域也出现双重谱带.Duplication of bands in this region also shown by trifluoropropyne and pe...
Left-wing dissidents have been emasculated and marginalised.左派持不同政见者已经遭到削弱和排挤。In a pre-emptive move the Interior Ministry arrested a number of suspected dissidents.内政部抢先行动，逮捕了许多持不同政见的嫌疑人。Political dissidents complained o...
an old-fashioned wind-up gramophone装有发条的老式留声机The telephone and the gramophone were contemporary.电话和留声机是同一时代的产物.They danced to an ancient gramophone.他们随着一架老式留声机的音乐跳起舞来....