dwell on
phrasal verbdwell on/upon something
to think or talk a lot about something, especially something it would be better to forget 老是想着,唠叨(尤指最好应忘记的事) Extra ExamplesHer mind dwelled gloomily on the future. 她闷闷不乐地想着未来。 I don't want to dwell on this subject for too long. 我不想在这个问题上纠缠太久。 She had learnt never to dwell on what might have been. 她已经学会永远不要老想着可能发生的事情。 They had no time to dwell on present miseries. 他们没有时间细想当前的苦难。
to look at something for a long time 细看;凝视