/ˈpraɪˌmɛri ˈwɪtnəs/ – Phrase
Definition: nhân chứng chính.
A more throughout explanation: A primary (principal) witness is a person who has direct knowledge of the events or circumstances relevant to a legal case and whose testimony is considered crucial or central to the case. This witness is typically relied upon heavily by the parties involved in the legal proceedings to provide key information or evidence.
Example: The primary witness in the case provided crucial testimony that helped the jury reach a verdict.