| 1 | He taught the students to make the insulator. | |
| 2 | It is going to be electrical insulators. | |
| 3 | And in other cases, they behave more nearly as insulators. | |
| 4 | On the ceiling one may see ceramic insulators. Interesting, what this room was for. | |
| 5 | The blown-in insulation and broken glass filled our hair and eyes. |