The white hair in the mirror reminded her that her youth was gone.
Tips
usage
A common modern set phrase, often paired with 时光不返 (shíguāng bù fǎn, 'time does not return'). Frequently used in essays, song lyrics, and motivational writing.
memory
Word-for-word: 'youth (青春) — not (不) — again (再).' The structure mirrors English 'never again' — once youth has passed, it cannot return.
