/tɜrn steɪts ˈɛvɪdəns/ – verb
Definition: Cung cấp bằng chứng cho nhà nước.
A more thorough explanation: (of a criminal) to confess to a crime and give information in court against the other criminals involved in order to receive a less severe punishment
Example: One of the defendants has decided to turn state’s evidence and will be a witness for the prosecution,