/tə bi ʌv fʊl ʌv ˈliːɡəl eɪdʒ/ – Phrase
Definition: đến tuổi trưởng thành.
A more thorough explanation: To be of full (legal) age means to have reached the age at which a person is considered an adult in the eyes of the law and is entitled to exercise all legal rights and responsibilities, typically set at 18 years old in many jurisdictions.
Example: Upon reaching the age of majority, individuals are considered to be of full legal age and are granted certain rights and responsibilities.