没有人知道原因，也没有人愿意去提及这段伤心的回忆。

No one knows the cause, no one wants to mention this sad memories.

youdao

杰克：商业新闻：股票价格上涨，凯伊国际计算机公司的股票涨到两美元，但是没有人知道其中的原因。

Jake: in business news, stock prices are up. International Computer Key Company is up two dollars, but no one knows why.

youdao

坏消息是没有人知道确切原因。

The bad news is that no one knows exactly why.

youdao

I think that might be the reason- no one knows what all their reasons were.

我认为也许这就是原因-,没有人知道他们所有的原因是什么。

耶鲁公开课 - 金融市场课程节选