At any stage of the proceedings, the arbitral tribunal may hold hearings for the presentation of evidence by witnesses, including expert witnesses, or for oral argument.

在审理程序进行的任何阶段，仲裁庭可以举行庭审，听取证人(包括专家证人)陈述证言，或听取口头辩论。

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In their legal challenge, the two groups claim the inspector failed to take into account a key expert's oral testimony the harm would be greater than he first indicated in his written evidence.

BBC: West Norfolk wind farm plans taken to High Court

They claimed the inspector failed to take into account key expert Dr Jonathan Edis's oral testimony that the harm would be greater than he first indicated in his written evidence.

BBC: High Court supports West Norfolk wind farm plans