目的语言: 英语
If you want to know the value of 10 years, ask the couple that just got divorced.
If you want to know the value of 4 years, ask the person who just graduated from university.
If you want to know the value of 1 year, ask the person who just failed his final exam.
If you want to know the value of 9 months, ask a mother who just gave birth to a child.
If you want to know the value of 1 month, ask a mother of a premature infant.