They are then covered in another layer of plastic insulation.

然后在它们的外面覆盖一层塑料绝缘物质。

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Plastic insulation over the windows barely kept in what heat was being generated.

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It said they contain large amounts of plastic and flammable insulation, which can cause large fires that spread quickly and highly toxic gases.

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Just like electrical wires, nerves have insulation - but instead of plastic, the body uses myelin.

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