A material witness failed to appear in court.

一名重要的证人没有出庭。

youdao

Urban texture, as the relatively deep material content of city formation, is the direct witness to the history of a city.

城市肌理作为城市形态中比较深层的形态物质内容，是城市历史最直观的见证。

youdao

The witness produced a new material fact.

证人提供的新的实质性证明。

youdao

After the September 11 attacks, Moussaoui was held as a material witness and sent to New York to be questioned.

CNN: Sept. 11 suspect to be tried in Virginia

He is an Algerian waiter who was reportedly questioned by the FBI and taken before a federal grand jury as a material witness.

CNN: Supreme Court requests government to justify secret detention

Officials would not confirm that Al Salmi had been held on a material witness warrant, though other suspects arrested in the investigation and subsequently flown to New York for questioning were held as material witnesses.

CNN: Alleged associate of suspected hijacker indicted