It would take many decades to build up the level of education and sophistication required.
要花好几十年的时间来逐步达到所需要的教育和发展水平。
How many decades are you expecting to proceed?
如何几十年来，你希望继续吗？
We are unlikely to see either for many, many decades.
但是实际情况却是，我们不太可能在几十年内看到以上条件中的任何一个。
It will be really difficult for that to happen for many decades.
要在几十年间达到富裕的水平真的很难。
After many decades, my father's words still ring in my ears.
几十年过去了，爸爸的话还在我耳边回荡。
Resistance to insecticides has been apparent for many decades.
杀虫剂抗药性的出现已有数十年。
They've been around for many decades and never go out of style.
它们已经存在了几十年，永远不会过时的。
Bowling has been around as a very popular leisure activity for many decades.
几十年来，保龄球一直是一项热门的休闲活动。
But many others, especially those who have been campaigning for many decades, remain queasy.
但是很多其他人，特别是那些已经战斗了几十年的人，仍然对他们予以怀疑。
Many of them have also been unable to return home, sometimes for decades.
他们中的许多人也已无法返回家园，有时长达几十年。
Many farmers said that this was the worst flooding in decades.
许多农民说，这是数十年来最大的洪水。
Risk Management has been used in many areas for decades.
风险管理已经应用于许多领域十多年了。
Over the next several decades, the foundation opened offices in many countries around the world.
在之后的几十年里，基金会在很多国家开设办事处。
Over the next several decades, the foundation opened offices in many countries around the world.
在之后的几十年里，基金会在很多国家开设办事处。
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