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authenticator一般指认证器（使用「秘密金钥」加密过的片段资讯，其中包含时戮」栏位），很少指人的。voucher证人,保证人,证明者,凭证,凭单,优惠购货卷witness目击者reference推荐人，证明人可见reference好些！
扈志泉额
目击者witness ['witnis]n. 证人；目击者；证据vi. 作证人vt. 目击；证明；为作证网络释义Witness:证人|目击者|证据witness line:证示线|证示线 本文章来自：博研联盟论坛expert witness:鉴定人，专家证人|专家证人|专家鉴定证人eyewitness ['ai,witnis]n. 目击者；见证人网络释义eyewitness:目击者|目击证人|目击证人,目击者eyewitness testimony:目击者证词Eyewitness accounts:目击实录相关例句1.警察询问了谋杀案的几位目击者。The police questioned several eyewitness to the murder.2.地方法官就事故的详细情况询问目击者。The magistrate interrogated the witnesses upon the details of the accident.3.我是他们吵架时的目击者。I was a witness to their quarrel.4.同时一些目击者称看见一只狼从现场逃走。Meanwhile several witnesses reported a wolf running away from the scene.5.有一个精神控制受害者也是一个目击者者。One mind control victim is also an adept remote viewer.6.以下是目击者所说的话。This is what the witness said.7.目击者说直升机在下降的途中撞上高压电线。Witnesses say the helicopter hit power lines on its way down.
