dia·phragmBrE/ˈdaɪəfræm/NAmE/ˈdaɪəfræm/noun(anatomy解剖学) thelayerofmusclebetweenthelungsandthestomach, usedespeciallytocontrolbreathing膈;膈膜;横膈膜 (BrEalsocap) arubberorplasticdevicethatawomanplacesinsidehervagina before having sex to prevent sperm from entering the wombandmakingherpregnant子宫帽(避孕用具)anythinpieceofmaterialusedtoseparatethepartsofamachine, etc.(机器等的)隔膜,隔板(specialist) athindiscusedtoturnelectronicsignalsintosoundandsoundintoelectronicsignalsintelephones, loudspeakers, etc.(电话机、扬声器等的)膜片,膜件,振动膜