electric pad

例句：

1. 1. This electric pad is perfect for my office chair.
   这个电垫非常适合我的办公椅。
2. 2.The electric pad has a built-in battery that lasts for hours.
   这个电垫内置电池，可以使用几个小时。
3. 3.I bought this electric pad as a gift for my friend's birthday.
   我买了这个电垫作为朋友生日的礼物。