ruminate
verb [ I ] uk/ˈruː.mɪ.neɪt/ us/ˈruː.mə.neɪt/
(THINK)
formal沉思，长时间思考
to think carefully and for a long period about something
She ruminated for weeks about whether to tell him or not. 几个星期她一直在反复考虑是否要告诉他真相。
(EAT)
biology specialized（动物）反刍，倒嚼
(of particular types of animal) to bring up food from the stomach and chew it again