The book is the fruit of years of research.

这本书是多年研究的成果。

《牛津词典》

This book is the result of 25 years of research.

这本书是25年研究的结晶。

《牛津词典》

Their success was the result of years of hard graft.

他们的成功是多年艰苦奋斗的结果。

《牛津词典》

After two years of fighting, with many deaths on both sides, the government decided the struggle was too costly.

VOA: special.2010.04.01

When I reflect on the first couple of years of Baidu's operation, I think there are three things that's very critical.

当我回想百度最初的那几年，有三件事是非常重要的。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

It would mean that I would go through another 12 years of school,

学医就意味着我将在学校再待12年，

如果成为医生 - SpeakingMax英语口语达人

Pay is also rising after the relatively lean years of 2002 and 2003, executive recruiters say.

FORBES: Wall Street's Hiring Spree

The settlement ends six years of litigation, and three pending federal lawsuits will be dismissed.

FORBES: Toyota Settles Hybrid Patent Case

But legislators had anticipated using that money to rebuild state projects after years of budget cuts.

NPR: Alaskans Speak Up About Oil Field Shutdown