如果当你的双手湿的或站在湿的地板上不要用湿手打开电源开关或电器设备。
Ifyour hands are wet or you are standing on a wet floor, don't touch lightswitches or handle electrical equipment.
时间延迟继电器，电连接到电机和电源开关。
A time delay relay is electrically connected to the motor and the power switch.
太阳能电池，电风扇，充电器，蓄电池，及电源开关通过导线相连。
The solar cell, the electric fan, the charger, the storage battery and the power supply switch are connected through the conducting wires.
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