"I'd rather not dwell on the past," he told me.

“我宁愿不多想过去，”他告诉我。

《柯林斯英汉双解大词典》

Don't dwell on the past or the future.

不要活在过去和未来。

youdao

First of all, it is futile to dwell on the past.

首先，沉湎于过去是无意义的。

youdao

You know what, and just always, you know, there's, don't dwell on the past,

总是，不要一直想着过去，

不要放弃 - SpeakingMax英语口语达人

And notice by the by, that when we make choices about our future, from the hedonist point of view, at least, there's no particular need to dwell a whole lot on the past, because what's done is done.

需要注意的是，当我们,为未来作选择时，起码享乐主义者认为，不必过分着眼于过去，因为过去的已经过去。

耶鲁公开课 - 死亡课程节选

The Cuban leader did not dwell on the past in his speech.

BBC: News | Americas | Castro welcomed to Grenada

She added that the outcome of the match could have been different had she not fallen twice, but otherwise refused to dwell on the past.

WSJ: Azarenka Beats Li to Win Australian Open

Oklahomans have never been the kind to dwell on the past, but we won't forget the 168 people who died in the blast on April 19 and those who bravely survived.

CNN: A flashback to Oklahoma City bombing