欢迎您搭乘北京地铁列车.希望您有一个愉快的旅程.Welcome to Beijing Metro.We hope you will have a pleasant journey.欢迎您搭乘北京地铁列车.希望您有一个愉快的旅程.Welcome to Beijing Metro.We hope you will have a pleasant journey.欢迎您搭乘北京地铁列车.希望您有一个愉快的旅程.Welcome to Beijing Metro.We hope you will have a pleasant journey.欢迎您搭乘北京地铁列车.希望您有一个愉快的旅程.Welcome to Beijing Metro.We hope you will have a pleasant journey.欢迎您搭乘北京地铁列车.希望您有一个愉快的旅程.Welcome to Beijing Metro.We hope you will have a pleasant journey.