基本解释v.副署；会签n.口令；暗号；副署；连署同根派生 英汉例句用作名词 (n.)The back shows petroleum prospecting and the countersign is the same as the 5 yuan.此券背面图是石油勘探，暗号和五元券一样。Traveller's check need countersign.旅行支票要复签。