人们一度认为地球是平的。

People used to believe (that) the earth was flat.

《牛津词典》

人们一度认为他是一个有希望的作家。

For a time he was looked on as a promising writer.

youdao

我认为人们一度希望美联储能为这一句话多做些什么，但它却没有。

I think there was some expectation that the Fed would do more along these lines, and it did not.

youdao

It fit the environment perfectly, once they could make these things actually go twenty-five miles an hour.

它与北美的环境及其契合,人们铺路速度一度可以,达到每小时25英里

耶鲁公开课 - 美国内战与重建课程节选