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"With an event like this, aftershocks can continue for years - maybe decades," says Sevilgen.

瑟韦尔根说，“像现在这种情况，余震有可能持续数年- - -也可能数十年。”

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Skeptics, though, contend that the technology to substantially displace oil-fired mobility will take years, maybe decades, to develop.

而怀疑论者则认为，能真正取代燃油动力车的技术还需要数年甚至数十年才能研发成熟。

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Efficient markets" is a theory about-- well it came in about three decades ago, maybe it's closer to four decades ago-- it's a theory that financial markets work very well and incorporate information very well.

有效市场是...,大约三十年前,甚至四十年前,有人提出了这一假说,他认为金融市场运行良好,而且信息披露全透明

耶鲁公开课 - 金融市场课程节选

Once upon a time, maybe three decades ago, people thought hormone replacement therapy was the fountain of youth for women going through menopause.

NPR: Breast-Cancer Drop Attributed to Less Hormone Therapy

Maybe four more decades of fiat money would see the value of the dollar decline by another factor of forty-eight.

FORBES: Economic Booms And Busts Of The Gold Standard Era

Jackie's well-heeled kids, each on The Forbes 400 list several times during the 1980s, would get the bulk of the principal only upon Morgan's death--maybe not for decades.

FORBES: It's My Money