词典释义：
a person who sees an event, typically a crime or accident, take place
目击者；见证人
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police are appealing for witnesses to the accident 警察正在呼吁那次事故目击者出来提供帮助
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I was witness to one of the most amazing comebacks in sprinting history .我目睹了短跑历史上一次最令人称奇的东山再起。
a person giving sworn testimony to a court of law or the police
（法庭等的）证人。
a person who is present at the signing of a document and signs it themselves to confirm this
（在文件中签名的）见证人，连署人。
[mass noun] evidence; proof
证据；证言
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the memorial service was witness to the wide circle of his interest .那个追悼仪式证明了他兴趣之广泛。
used to refer to confirmation or evidence given by signature, under oath, or otherwise
证词
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in witness thereof ,the parties sign this document .各方签署此文件以资证明。
open profession of one's religious faith through words or actions
通过言语或行动公开承认自己的宗教信仰
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he told us of faithful Christian witness by many in his country .他跟我们说了他国家中许多人公开承认是虔诚的基督徒。
(亦作
证明标志（工作部件上的一条线或原表面的残余部分，表明加工去掉了多少料，或原来的外形）。
[with obj.]see (an event, typically a crime or accident) take place
目击，见证（犯罪、事故等）
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staff who witnessed the murder .目击谋杀的员工。
have knowledge of (an event or change) from personal observation or experience
（通过亲身观察或经历）得知
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what we are witnessing is the birth of a dangerously liberal orthodoxy .我们正目睹危险的有自由主义倾向的正统观念的产生。
(of a time, place, or other context)be the setting in which (a particular event) takes place
（时间、地点等）看到，目睹，是发生在（时间、地点等）
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the 1980s witnessed an unprecedented increase in the scope of the electronic media .２０世纪８０年代，电子传媒得到了空前的发展。
be present as someone signs (a document) or gives (their signature) to a document and sign it oneself to confirm this
在（文件）上签名作证，连署
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the clerk witnessed her signature .该职员连署为她的签名作证。
[in imperative]look at (used to introduce a fact illustrating a preceding statement)
瞧瞧，看看（用于证明前面论述的正确性）
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the nuclear family is a vulnerable institution ― witness the rates of marital breakdown .核心家庭是一种脆弱的组织形式——看看婚姻破裂的比率就知道了。
[no obj.] (
作证，证明
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his writings witness to an inner toughness .他的作品证明了他内心的坚韧。
(of a person)openly profess one's religious faith in
（人）公开表明自己的宗教信仰
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one of the purposes of his coming was to nerve the disciples to witness to Jesus .他来的目的之一就是鼓动门徒们公开表明自己对耶稣的信仰。
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as God is my witness （或God be my witness ） an invocation of God as confirmation of the truth of a statement 上帝作证，老天作证（用于确认事实）God be my witness, sir, I didn't! 老天作证，先生，我没干！call someone or something to witness archaic appeal or refer to someone or something for confirmation or evidence of something〈古〉 请… 作证；传…作证
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witness + 名词 见证...；目睹...
真题例句：
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a witness 证人/目击者
真题例句：
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a witness to sth ...的证人/目击者
真题例句：
"Old English
