五年的英文：
lustrum

Well,let's see.It's been about five years,since we went to Scotland lat.
自从我们上次去苏格兰，有五年了。

China has drawn up a blueprint for development in the next five years.
中国规划了今后五年的发展蓝图。

Five years hence
今后五年,五年之后

Five years from now
今后五年

It has a five-year guarantee against mechanical defects
机械件保用五年

Sign on for five years in the army
签约服兵役五年

It's 5 years to the day.
恰好五年整。

He was sent up for five years.
他被判入狱五年。

They bust up after five years of marriage.
他们婚后五年离异了.

After a lapse of five years[months]
事隔五年[月]之后