dwell on

US /dwel ɑːn/
UK /dwel ɑːn/
"dwell on" picture
1.

纠结于, 沉湎于

to think, speak, or write at length about (a particular subject, especially one that is a source of unhappiness, anxiety, or dissatisfaction)

:
Don't dwell on your past mistakes; focus on the future.
不要纠结于过去的错误;专注于未来。
She tends to dwell on negative thoughts.
她倾向于沉湎于消极思想。