First, disconnect the boiler from the water mains.先将锅炉与供水总管断开。Make sure plugs are disconnected from the mains...确保插头与电源断开。The battery charger plugs into any mains socket.这个电池充电器可以插入任何类型的电源插座.The Auto Compact Disc Cleaner...
The capital has been without mains water since Wednesday night.从周三晚上开始，首都就停水了。He is using your mains electricity to recharge his car battery.他在用你家里的电源给他的车载蓄电池充电。They plug into the mains.它们接到了干线上。...