Her passport had been stamped and countersigned by the duty sergeant at the police station.她的护照已经被警局的值班警官盖章并会签了。The order has to be countersigned by a doctor.这份订购单必须有医生会签。The note must be countersigned by a doctor.这张证明必须有一个医生连署。You have to get your visa countersigned by someone at the embassy.你的签证必须由大使馆的人副署。