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insulator

/ɪnsəleɪtɚ/

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1 · noun

a material that blocks heat or electricity

绝缘体；隔热材料

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Rubber is an effective insulator around electrical wires.
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橡胶是电线周围有效的绝缘材料。
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Pronunciation: /ɪnsəleɪtɚ/

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