A barrier against the passage of liquid or loose material, as a rubber sheet used in dentistry to isolate one or more teeth from the rest of the mouth.

 
  • 橡皮障:防止液体或松散物质的坝状物,如牙科用的橡皮障,把一颗或几颗牙齿与口中的其它牙齿隔离开。
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