Fat is an excellent insulator against the cold.

脂肪是极好的抵御寒冷的隔热材料。

'It is the greatest insulator we've ever seen,' he said.

“这是我们见过的最好的隔热材料”，他说。

Shellac also happened to be an effective electrical insulator.

紫胶恰巧还是一种有效的绝缘物。

Shellac also happened to be an effective electrical insulator.

紫胶恰巧还是一种有效的绝缘物。

The aluminum surface of the oxide layer is an electrical insulator.

铝表面的氧化层是一种电的绝缘体。

Simply put, a capacitor stores an electrical charge between two conductive plates separated by an electrical insulator.

简单地说，一个电绝缘体隔开两片导电板，而电容器在导电板间储存电量。