绝大多数金属都是电的良导体，而纸张、空气、玻璃则是良好的绝缘体。

Most metals are good conductors of electricity, while paper, air and glass are good insulators.

youdao

绝大多数金属都是电的良导体，而纸张、空气、玻璃则是良好的绝缘体。

Most metals are good conductors of electricity, while paper, air and glass are good insulators.

youdao