So you made a mistake, but there's no need to dwell on it.

你是错了，不过不必老是想着这事儿。

《牛津词典》

A great number of water fowls dwell on the island.

许多水鸟在岛上栖息。

《新英汉大辞典》

If I have a bad day, I will not dwell on it, I will forgive myself, I will put it behind me and I will continue to move forward in my recovery.

如果我有一个糟糕的一天，我将不会踌躇于此，我将会原谅我自己，我会将它抛在脑后并继续在我的恢复之路上前行。

youdao

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

It's a part of any business of course, but we shouldn't dwell on those people.

这都是生意的一部分，但我们对他们不会太注意。

什么样的客人都有 - SpeakingMax英语口语达人

No, in the context of a state visit which was intended to underline the success and importance of the relationship between London and Washington, Iraq was definitely not a subject to dwell on, or indeed to mention at all if it could possibly be avoided.

BBC: The Queen and President George W Bush

Now, for all that remains to be done, dwell for a moment on what has been achieved.

BBC: NEWS | UK | UK Politics | In full: Tony Blair's speech

"Any accomplishment was important only as a reference point for future improvement, not as a pleasurable memory to dwell on, " he writes.

WSJ: Honoring Tiger Woods for What He Is