先说一下dwell这个词：
dwell vi. vi. 居住;栖身
My parents dwell on the border of our country.
我的父母住在边疆。《外研社英语同义词辨析词典》
A great number of water fowls dwell on the island.
许多水鸟在岛上栖息。《汉英大词典》
dwell on/upon sth
仔细想，深思；老是想着，唠叨（尤指最好应忘记的事）
to think or talk a lot about sth, especially sth it would be better to forget
细看；凝视
to look at sth for a long time
It does not do to dwell on dreams and forget to live, remember that.
沉湎于虚幻的梦想，而忘记现实的生活，这是毫无益处的，千万记住。
出自英国作家J·K·罗琳的奇幻小说《哈利·波特》系列的第一本《哈利·波特与魔法石》（Harry Potter and the Philosopher's Stone）。
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。
I'd rather not dwell on the past.
我不想再沉湎于过去了。
Her mind sheered away from images she did not wish to dwell on.
她有意不去想那些她不愿多想的事情。
I shut out the memory which was too painful to dwell on.
我不再去回忆那些痛苦不堪的往事了。
Next time you have a problem, think about how you can improve the situation instead of dwelling on all the negative aspects.
下次再碰到问题，想想怎样改善局势，而不是一味考虑那些消极的方面。
Don't dwell on past failures.
不要老是想着过去的失败。
We will not dwell on that matter any longer.
我们将不再多想这件事了。
He dwelled upon that point for several minute.
他花了几分钟详细讲述了那个观点。
We will not dwell here in any detail upon these distresses.
我们不会在此详细地论述这些痛苦。
It would be superfluous to dwell on the matter any more.
不待赘言。
You don't have to dwell upon death. You just have to recognize it.
你不必总是想着死亡，你只需要认识它（承认它的存在）。
Stop dwelling on your problems and do something about them!
别老唠叨你的那些问题，还是做些实际工作解决它们吧！
Mr van Beurden, boss of Royal Dutch Shell, the world’s second-biggest publicly traded oil company, is not the first well-paid executive to dwell on the hardships of his youth.
作为全球第二大上市石油公司荷兰皇家壳牌的老板，范伯登并不是那些拿高薪的高管当中第一个唠叨自己年少时生活如何艰辛的人。
——《经济学人》
The Nordens do not want to dwell on what happened at the marathon or be defined by it.
诺登家的人不想对马拉松赛那件事念念不忘，也不想让它成为自己的标签。
——《纽约时报》