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diaphragm/
ˈdaɪəfræm
/
1.noun[c] [Physics] [Photography]
照相机的光圈或光阑
2.noun[c] [Anatomy]
腹部与胸腔间的隔膜
3.noun[c] [American English]
避孕用的子宫套或子宫帽
4.noun[c]
（接收或产生声波的）振动膜片