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。
The study was conducted over a period of decades.
这项研究时长超过数十年。
It's also a trend that emerged decades ago and has simply stuck.
这也是数十年前兴起的一种趋势，只不过保留到现在而已。
Past three decades have witnessed the evolution of the computer.
过去的三十年见证了计算机的发展。
In Columbia University, the same men ran their studios for decades.
在哥伦比亚大学，同一批人会运营他们的工作室几十年。
Non-native species can appear harmless for decades, then turn invasive.
非本地物种可能会在几十年内看起来无害，继而变得有入侵性。
It is through decades of hard work that China has progressed to a new stage.
经过几十年的不懈努力，中国已经发展到一个新的阶段。
What is more, non-native species can appear harmless for decades, then turn invasive.
更重要的是，非本地物种可能会在几十年内看起来无害，然后变得有入侵性。
She has set a shining example of loyal service over four decades.
四十年间，她树立了一个忠诚服务的光辉榜样。
The quality of life for gay men has improved over the last two decades.
男同性恋者的生活质量过去20年有了改善。
That is triple the number from two decades ago.
这个数字是二十年前的三倍。
The average age of first marriage has risen steadily for decades.
过去几十年来，初婚的平均年龄一直在稳步上升。
About three decades ago, China was known as the "bicycle kingdom".
大约30年前，中国被称为“自行车王国”。
The last few decades have brought a new lunch box revolution, of sorts.
过去几十年里，饭盒的样式经历了一场革命性的变化。
Ronald and Lois, married for 2 decades, consider themselves a happy couple.
罗纳德和露易丝结婚20年了，他们认为自己是幸福的一对。
Heavy rain and melting snow have swollen the river to its highest level in decades.
暴雨和积雪融化已经使该河流水位到达几十年来的最高水平。
And you can be wrong for decades.
你可能一错几十年。
未来的几十年内不会。
They are gonna keep that for decades.
他们在几十年间会一直这样。
快二十年了。
But the worst outlook in six decades?
但真的是六十年以来最滥的前景吗？
No patient has asked me that for decades.
已经有很多年没有病人问我这个问题了。
This practice has not changed for decades.
这种做法几十年来都没有改变。
But also it can happen within some decades.
但也可能会在几十年之内发生。
And often, they're holding for decades.
通常他们都持有数十年以上。
Decades later, we can still read these.
几十年过去了，我们仍旧能都读懂。
For decades this practice went unchallenged.
这个做法数十年来均未遭遇挑战。
For decades this practice went unchallenged.
这个做法数十年来均未遭遇挑战。
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