wallow in

例句：

1. 1. She was so lost in thought that she didn't notice the time passing by.
   她沉浸在思考中，以至于没有注意到时间流逝。
2. 2. The old man spent his last days waving to the sunset.
   那位老人在日落时徘徊，度过他最后的时光。
3. 3. He often wallows in his memories of the past.
   他经常沉溺于对过去的回忆中。