亲爱的，如果你想回到过去，我愿意放手。用英文翻译。

My dear, if you want to return to the past, I am willing to let go.

youdao

我定期用一些时间，投入我自己，放手去玩并得到快乐。

I invest in myself by taking regular time to let go, play, and have fun.

youdao

Then, I pull it again by the same amount and let it go; I do it 10 times.

然后,我再用相同的力拉它,再放手,这样做 10 次

耶鲁公开课 - 基础物理课程节选