four decades

The world's population has doubled during the last four decades.

过去40年中世界人口增加了一倍.

So it may seem rather strange that I have returned to college to finish the degree I left undone some four decades ago.

因此，我重返大学去完成四十年前中断的学位看似有些奇怪。

Stepping down from the presidency, Chirac will be closing out some four decades in politics.

希拉克离任后, 将告别他驰骋了四十多年的政坛.

Four decades ago, the country faced a farm crisis and responded with decisive boldness.

四十年前当巴国面临农业危机的时候,他们采取了大胆果断的应对措施.

The study of methodologies and techniques to produce correct software has been active for four decades.

研究的方法和技术来记录观测结果,得到正确的软件一直活跃在四十年.

Engaged in clinical anesthesia for more than four decades, professional and technical proficiency, overall.

从事临床麻醉工作四十余年, 专业技术熟练, 全面.

Two neighbors had been fighting each other for nigh on four decades.

两个邻居已经互相争斗了大约四十年.

Four decades after King's death much remains to be done.

金去世的四十年后仍需做出巨大的努力.

You know , I've been involved in politics andone way or another for four decades.

我直接或间接地参政议政已有已有四十年了.