/ˈkɒmpɪtənt ˈwɪtnəs/ – Phrase
Definition: nhân chứng cần thiết.
A more thorough explanation: A competent witness is an individual who is legally qualified and permitted to testify in court proceedings because they possess the necessary mental capacity and understanding to provide relevant and truthful testimony.
Example: The judge ruled that the psychologist was a competent witness to testify about the defendant’s mental state.