指出并证明to testify against

• 经当事人的指证，整个事件真相大白。

  Following the client's testimony, the truth of the entire event came to light.

• 面对证人的指证，这名肇事男子否认自己驾车撞人。

  Faced with the witness's testimony, the man who caused the accident denied he had hit anyone with his car.