/ˈprɪnsəpəl ɪn ðə ˈsɛkənd dɪˈgriː/ – Phrase
Definition: kẻ đồng lõa, đồng phạm, tòng phạm.
A more thorough explanation: In legal terms, the principal in the second degree refers to a person who aids, abets, counsels, commands, or otherwise assists in the commission of a crime, but who is not actually present at the scene of the crime. This individual is considered to be just as responsible for the crime as the principal offender who directly commits the act.
Example: In criminal law, an individual who aids, abets, or assists the principal offender in committing a crime may be considered a principal in the second degree.