electromagnetic switch

例句：

1. 1. The new car has an electromagnetic switch that can control the engine's speed.
   这款新车有一个电磁开关，可以控制引擎的速度。
2. 2.The old house had a traditional electromagnetic switch that controlled the lighting in the hallway.
   那所旧房子有一个传统的电磁开关，用来控制走廊的照明。
3. 3. The engineer used an electromagnetic switch to switch on the lights in the factory.
   工程师使用了一个电磁开关来打开工厂里的灯。