expert witness testimony专家作证证据 impeach the testimony of a witness 对证人证词的可靠性提出异议 ..
双语例句
1
Even an expertwitness called to discuss statistical movements of stock prices turned feisty as he sparred with prosecutors seeking to discredit his analysis and testimony.
有一位被召来讨论股价变动的专家证人，由于其分析和证词遭到检察官的怀疑，与之发生了激烈争吵。
2
The appeals court said the conviction was unsound because testimony had been barred from an expertwitness deemed crucial to Mr Nacchio's defence.
这家上诉法院称该判决不确，一位专家证人对纳齐奥案的证据不予认可，这对于纳齐奥先生的辩护至关重要。
3
She says the federal case was flawed, citing testimony by a prosecution expertwitness.