[dæm]
障，橡皮障：①阻塞水流和其他液流的屏障；②一种薄乳胶片，用于分离某些组织和结构的手术
习惯用语rubber dam
橡皮障：打孔乳胶片，牙科手术时置于牙齿上面以把手术区与口腔的其余部分隔开- orthodontia
- orthodontic
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