electrical brush

例句：

1. 1. Electrical engineers are responsible for designing and maintaining electrical systems.
   电气工程师负责设计和维护电气系统。
2. 2. The electric toothbrush is a popular choice for people who need to clean their teeth quickly.
   电动牙刷是那些需要快速清洁牙齿的人们的首选。
3. 3. The electrical brushes used in this machine are designed to remove dirt and debris from the surface of the material.
   这种机器中使用的电气刷子设计用来从材料的表面上去除污垢和碎屑。