It took another three decades before a flying sub appeared for real.

又过了三十年，一架真正的飞潜艇才出现在人们眼前。

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But for three decades before that, equity prices easily outstripped property prices (see chart 2), so in the long run equities have been a better bet than houses.

但如果在三十年前，股票价格会轻易的超过房产价格(见表达式2)，因此从长远来看，股票相较房屋是个更好的赌注。

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After 1929, it took three decades before Wall Street seemed safe again, and there was almost a decade between the scandals of the nineteen-eighties and the boom of the late nineties.

1929年之后，华尔街花了三十年重新稳固其地位，从20世纪80年代的华尔街丑闻到20世纪90年代的华尔街重振雄风相隔了将近十年。

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Mr Suharto ruled Indonesia with an iron fist for more than three decades before resigning in disgrace in May 1998.

ECONOMIST: Indonesia

The age of consent had been 16 years for three decades before the government raised it in its ordinance in February.

BBC: Indian bill on tough rape laws passed by parliament

The net benefit to seniors who retire in 2020 is roughly double the amount received by seniors who retired three decades before.

FORBES: Sorry, Seniors, You Didn't Pay for (All of) That