They were followed for approximately three decades.

他们被跟踪（调查）了大约三十年。

Now, he's been sober for nearly three decades.

现在，他已经戒酒近30年了。

That was more than three decades ago.

那是三十多年前的事了。

She's worked with pandas for almost three decades.

她致力于大熊猫保护工作将近30年。

Lots of Americans bought that nonsense, and over three decades, some 10 million smokers went to early graves.

许多美国人相信了这些胡言乱语，在三十多年中，差不多有一千万烟民早早的进了坟墓。

Hosni Mubarak, who ruled Egypt for three decades, died.

统治埃及三十年的胡斯尼·穆巴拉克去世。

Three decades ago, NASA decided the answer was yes.

30年前，NASA决定这个答案是肯定的。

And to do that within the next three decades.

时间期限只有三十年。

Her words struck a chord even three decades later.

即使在 30 年后，她的话仍能引起共鸣。

He'd been on the run for three decades.

他已经逃亡了三十年。

He'll spend the next three decades in prison.

他会在监狱里度过三十年。

How have playing games changed over the last three decades?

在过去的三十年里，玩游戏发生了哪些变化？

Researchers analyzed three decades of recordings of male Savanna sparrows.

研究人员分析了近三十年来雄性草原麻雀的录音。

He led the tiny nation for more than three decades.

他在这一领土狭小的国家掌权30多年。

The hobby has now lasted for more than three decades.

这种爱好现在已经持续了三十多年。

In less than three decades, we want to reach Net Zero.

在不到三十年的时间里，我们希望实现净零排放。

In less than three decades, we have to reach Net Zero.

在不到三十年的时间里，我们必须达到净零排放。

In 2014, unemployment fell faster than it has in three decades.

2014年也成为30年来失业率下降最快的一年。

Her parents however have been married for more than three decades.

然而，她的父母已经都已经结婚三十多年了。

He provided a weekly soundtrack to NFL games for three decades.

三十年来，他每周为美国国家橄榄球联盟的比赛配音。