Cách sử dụng
The expression "young at heart" means that someone has a youthful attitude or outlook on life, regardless of their actual age. It is often used to describe older people who have a positive and energetic attitude towards life, as though they are still young. You can use this expression to talk about someone you know who is older but doesn't seem to act their age, or to describe yourself if you feel that you have a youthful outlook on life.