n.签证；vt.签发签证； 变形： 复数：visas过去式：visaed过去分词：visaed现在分词：visaing第三人称单数：visas 双语释义：n.(名词)[C] 签证 official mark put onto a passport to show that it has been examined and approved by the officials of a country,giving a foreigner permission to enter,pass through,or