dwell on
US /dwel ɑːn/
UK /dwel ɑːn/
1.
糾結於, 沉湎於
to think, speak, or write at length about (a particular subject, especially one that is a source of unhappiness, anxiety, or dissatisfaction)
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Don't dwell on your past mistakes; focus on the future.
不要糾結於過去的錯誤；專注於未來。
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She tends to dwell on negative thoughts.
她傾向於沉湎於消極思想。