我以2号线建国门站换乘1号线为例子：欢迎乘坐地铁2号线列车，列车运行前方是建国门站，下车的乘客请提前做好准备。建国门站是换乘车站，换乘地铁1好线的乘客请准备下车。The next station is JIANGUOMEN.Please get ready for your arrivell.JIANGUOMEN is a transfer station.Passenger for line one please prepare to get off.