rumination
noun uk/ˌruː.mɪˈneɪ.ʃən/ us/ˌruː.məˈneɪ.ʃən/
(THINKING)
[ C or U ]沉思，长时间思考
the act of thinking carefully and for a long period about something
(EATING)
[ U ]（动物）反刍，倒嚼
the act of bringing up food from the stomach and chewing it again