她说，很少有美国人知道三千五百万所房子的房顶铺隔热材料还有石棉(石棉与间皮瘤有关联)。

Few Americans, she says, are aware that the roofs of 35m homes may be insulated with material containing asbestos (which is linked to a cancer called mesothelioma).

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无机隔热材料中通常含有石棉，合成隔热板材是一类常用的有机隔热材料。

Have no hot material isolate the heat machine inside to usually imply the asbestos, synthesize the heat shield material is a hot material isolate the heat in common use organism.

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