基本解释n.附加物；号外；额外的人手；上品名词extra的复数形式.同根派生 英汉例句用作名词 (n.)The newspapers published extras today that contained the election results.报纸今天印了号外，刊登了选举结果。Every newspaper in the city will be getting out extras within the next two hours.两个小时内城里的每家报纸都会出号外。