PROF. : Most people once thought rocket science was a ridiculous idea.

大多数人都曾经认为火箭科学，是一个荒谬的想法。

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People once thought focused on serving the people, will immediately become more aggressive, more power, more cannot refuse.

人们一旦思想集中于服务别人，就马上变得更有冲劲，更有力量，更加无法拒绝。

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People once thought that the oceans were so big that it didn't matter if we dumped rubbish into them or caught huge quantities of fish and whales for food.

人们认为海洋是无限大的，可以随意往里倒垃圾，可以大肆捕捞海洋里的鱼类和鲸鱼。

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It lasted just a few months and people once we got out of it people thought maybe we're getting a brief--a respite.

它只持续了几个月，人们,曾经我们摆脱了这个时期后人们认为,也许我们得到了一个暂时的缓解和放松。

耶鲁公开课 - 金融市场课程节选

If that means fewer people are doomed than once thought, it is good news indeed.

ECONOMIST: Building better models of the prevalence of HIV

The people who worked at YRC Worldwide once thought the same thing.

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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