Sure, it was just a few hours here or there... but over three decades.

可能看起来不过是每天扣去的三五个小时，但是三十年下来呢？

youdao

Rice and wheat prices have spiked at levels not seen in over three decades.

在30多年的时间里，大米和小麦的价格以前所未有的水平在上涨。

youdao

Over three decades he built the business from $2 million in sales to $300 million-plus.

在三十年中他将公司销售量从200万美元推上了3亿多美元。

youdao

She moved from butterflies to biochemistry, and her research over the past three decades has revolutionized the study of skin and skin diseases.

VOA: standard.2010.03.29

Andrew Peykoff Jr. had spent four years at the bottled water business his father built over three decades.

FORBES: Water, Water Everywhere

Over three decades he has helped a variety of hospitals, sports and youth organisations.

BBC: Wanted: A new breed of business leaders like Cadburys?

Over three decades he served as an early employee or founder of eight high-tech startups.

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