电开关英语是 "electric switch"。
其来源是由英语单词 "electric"，意思是电的，和 "switch"，意思是开关组合而成。
例句：
The electric switch controls the flow of electricity to the pght bulb. (电开关控制电流流向灯泡。)
I need to replace the electric switch because it's not working properly. (我需要更换电开关，因为它不正常工作。)
Can you turn off the electric switch before you plug in the vacuum cleaner? (你能在插上吸尘器之前关闭电开关吗？)