1 sentence

1. 专家提供的专业证言对调查非常有帮助。

   zhuān​jiā tí​gōng de zhuān​yè zhèng​yán duì diào​chá fēi​cháng yǒu bāng​zhù.

   The professional testimony provided by the expert was very helpful to the investigation.

   Source: Dong Chinese Dictionary