The letters were written by people from different times in history.

这些信是由不同历史时期的人写的。

youdao

I think the idea of a stock must have been invented independently at many times in history.

我认为股票这个概念，在历史上被反复提出过多次。

youdao

I often think about parents during the Great Depression, or other unstable times in history.

我经常思考大萧条时期或者其他历史上不稳定时期的父母。

youdao

But there have also been times of harmony in history. likein medieval Spain.

VOA: standard.2010.03.18

That's an idea that struck people intuitively at various times in history, but they didn't know how to do these calculations.

在历史上,人们很多次,直觉地感知到了这一点,但是他们不知道怎么去计算

耶鲁公开课 - 金融市场课程节选

I think the idea of a stock must have been invented independently at many times in history.

我认为股票这个概念,在历史上被反复提出过多次

耶鲁公开课 - 金融市场课程节选

Astonishingly, this was one of those rare times in history when group editing actually bettered a statement.

FORBES: Fact and Comment

He lost, but mostly made money during one of the most challenging times in history.

FORBES: Niall Ferguson, Keynes and the Long Run

At such times in history capital markets tolerated high levels of borrowing, at least for the victorious side.

FORBES: Don't Cave GOP, This Time Deficits DO Matter