/ɒn ɔːˈθɒrɪti/ – Phrase
Definition: căn cứ vào, vin vào…
A more thorough explanation: “On authority” is a legal term that refers to something being done or said with the power or permission of a person or organization that has the legal right to control or command. It implies that the action or statement is based on the authority granted by a higher power or entity.
Example: The police officer acted within his authority when he issued a parking ticket to the vehicle parked in a no-parking zone.