老人们坐在公园长椅上，追忆着年轻时的美好时光。

The elderly sat on the park bench and ___reminisced about their youthful days.

爷爷奶奶喜欢一起回忆他们年轻时的冒险经历。

Grandpa and grandma love to ___reminisce about their youthful adventures together.