Tā fǎnchú zhe dǎoshī de huà, màn man lǐjiě le qízhōng de hányì.
He pondered the mentor's words over and over, gradually understanding their meaning.
Tips
usage
反刍 literally describes the biological process of ruminant animals bringing food back up to chew again. Figuratively, it means to revisit and mull over thoughts, memories, or lessons — a useful word for describing deep reflection.