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BNC: 23190 COCA: 24690
insulator
noun [C] /ˈɪnsjʊˌleɪtə(r)/
singularinsulator
pluralinsulators
  1. a substance that reduces the amount of heat, cold, noise, or electricity that can pass through something 绝热体;隔音物;绝缘体
     Synonyms and related words
    Building materials: adobe, aggregate, asbestos...
BNC: 23190 COCA: 24690
BNC: 23190 COCA: 24690

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