/ˈliːɡəl eɪdʒ/ – Phrase
Definition: 1. tuổi trưởng thành;
2. tuổi được pháp luật xác định.
A more thorough explanation: Legal age refers to the age at which a person is considered by law to have reached the age of majority, and is therefore legally recognized as an adult with the capacity to make certain decisions and enter into contracts. The legal age may vary depending on the jurisdiction and the specific rights or responsibilities involved.
Example: In order to purchase alcohol in this country, you must be of legal age, which is 21 years old.