to think or talk too much about something unpleasant that happened in the past
過去に起こった嫌なことについて、あまりにも考えすぎたり話したりすること (kako ni okotta iya na koto ni tsuite, amari ni mo kangae sugitarī hanashitari suru koto)
"She tends to dwell upon her past mistakes instead of moving on."
"彼女は過去の間違いを悩んで、前に進むことをしません" (kanojo wa kako no machigai o **dwell upon** shite, mae ni susumu koto o shimasen)
to move beyond a particular place or object
to sing loudly and clearly
to guide others through your own example or actions
to restore people's trust or optimism
to reserve money for a particular purpose
to take precautions to prevent something bad from happening
