1. 将…隔离(以免受外界影响)
    If a person or group is insulated from the rest of society or from outside influences, they are protected from them.

    e.g. They wonder if their community is no longer insulated from big city problems...
           他们在想是否大城市的问题离自己的社区也已经不再遥远了。
    e.g. Their wealth had insulated them from reality.
           财富将他们与现实隔离。

2. 使隔热;使隔音
    To insulate something such as a building means to protect it from cold or noise by covering it or surrounding it in a thick layer.

    e.g. It will take almost 25 years to insulate the homes of the six million households that require this assistance...
           要为 600 万户有此需求的家庭进行住宅隔热隔音处理得花将近 25 年的时间。
    e.g. Is there any way we can insulate our home from the noise?...
           有什么办法可以使我们的住宅隔音吗？

3. 使绝缘
    If a piece of equipment is insulated, it is covered with rubber or plastic to prevent electricity passing through it and giving the person using it an electric shock.

    e.g. In order to make it safe, the element is electrically insulated.
           为安全起见,该元件作了电绝缘处理。
    e.g. ...electrical insulating tape.
           绝缘胶带