The traditional way to test the authenticity of testimony is through the witness 'extrinsic behavior and facial expressions.

对于言词证据的真实性问题，传统的方法主要借助证人的外部行为表现或表情来识别。

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In common law, the authenticity of testimony is controlled by the rule of admissibility, for the object of justice in dispute settlement.

英美法通过证据可采性规则对证人证言的真实性进行控制，以实现公正解决纠纷的目的。

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Witnesss testimony is an important evidence system and the oath system of witness is an important measure to assure the authenticity of testimonies made by witnesses.

证人证言是一种重要的证据制度，而证人宣誓制度则是保证证言真实性的一项重要措施。

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The authenticity of the testimony the suspect and his associates gave to the Kenyan court was compromised by the fact that he and his associates had been kept in a cell together before interrogation, and their appearance in court, Mr. Bryden said.

WSJ: U.K. Suspect Was Detained in Kenya in 2010