This made Mr Wolf feel that though the evidential value of his videotape was low, the federal prosecutors meant to force him to identify the masked protesters before a grand jury.

这就使得沃尔夫先生觉得，尽管他的录象带没有很高的证据价值，但是联邦检察官故意强迫他在大培审团面前确认那些带面具的反对者。

youdao

Investigative experiment results have evidential characteristics, and the probative value of the results should be analyzed in specific case.

侦查实验结果具有证据的属性，其证明价值要结合个案情况具体分析。

youdao

Counsel for the police argued that while the material may cause her professional concern it would be of "evidential value" to the police investigation.

BBC: Real IRA are 'republican Taliban'

The evidential value of entomology may come as no surprise to lovers of crime fiction, but the fact that it is scientists at the Natural History Museum - more normally associated with the fossilised remains of long dead plants and animals - who are pushing the boundaries of modern forensic science, comes as something of a revelation.

BBC: Forensic science uncovered