A cow ruminates its food.

牛反刍所吃的食物。

Where depression questions, ruminates and hesitates, mania answers with vigor and certainty.

当抑郁患者发出疑问 、 覆考虑,且裹足不前时, 躁狂患者则以充份的活力与信心勇往直前.

Dr. Roese notes that regret can be damaging to mental health when a person fixates or ruminates on the missed opportunity.

勒泽博士说，如果一个人老是沉湎于遗憾之事，这将有损精神健康。