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。

《柯林斯英汉双解大词典》

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。

youdao

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。

youdao

And bluegrass aficionados here hope it will continue for many decades to come.

VOA: standard.2010.05.28

None of us have seen a case of smallpox, it hasn't existed in the world for many decades now.

我们没人见过天花,在这个世界上它已经被消灭几十年了

耶鲁公开课 - 生物医学工程探索课程节选

Instead, he's known for the development of an encompassing theory of mind, one that he developed over the span of many decades.

相反，他却因为提出了极具包容性的,心理理论而闻名天下，这个理论是他通过数十年的研究才提出的。

耶鲁公开课 - 心理学导论课程节选

So Jordan has always been a safe haven to people around us through many, many decades.

WHITEHOUSE: President Obama Holds a Press Conference with King Abdullah II of Jordan | The White House

It's been used by many past Presidents -- Republican and Democrat -- for many decades.

WHITEHOUSE: President Obama: Our Security, Our Values

Given the current support for fusion research and development, commercializing fusion power remains many decades away.

FORBES: A Challenge to America: Develop Fusion Power Within a Decade