In order to make it safe, the element is electrically insulated.
为安全起见，该元件做了绝缘处理。
《柯林斯英汉双解大词典》
2
In the final step, heavily insulated exterior walls and windows are slotted in by crane.
最后一步，用起重机将高度隔热的外墙和窗户安装进去。
3
An automobile produces enough heat to warm an average house in winter, and if a house were perfectly insulated, one adult could also produce more than enough heat to warm it.