The word 复苏 (fùsū) is a compound formed by combining two semantically related characters: 复 (fù), meaning "to return", "to repeat", or "to recover", and 苏 (sū), meaning "to revive" or "to awaken". Together, they create a vivid metaphorical meaning where 复 conveys the idea of a cyclical return to a previous state, and 苏 adds the nuance of coming back to life or activity. The term is most commonly used to describe economic recovery (经济复苏), the return of spring (万物复苏), or the revival of any dormant system, effectively capturing the process of something reawakening and regaining vitality after a period of decline or stillness.