ruminate

动词 ruminate:

1. chew the cuds
2. reflect deeply on a subject
   同义词：chew over, think over, meditate, ponder, excogitate, contemplate, muse, reflect, mull, mull over, speculate

1. As people grow older, they begin to ruminate on the uncertainty of life.
   随着年龄的增长，人们开始对生活的变化无常冥思苦想。
2. The cow began to ruminate after eating up grass.
   牛吃完草后开始反刍。
3. He is ruminating on recent events.
   他正在思考最近发生的事。

ru.mi.nate

v.（动词）
ru.mi.nat.ed,ru.mi.nat.ing,ru.mi.nates
v.intr.（不及物动词）
To turn a matter over and over in the mind.See Synonyms at ponder
沉思默想，反复思考参见 ponder
To chew cud.
在心里反复琢磨一件事
v.tr.（及物动词）
To reflect on over and over again.
反刍，倒嚼：沉思，反复思考

来源：
Latin rômin3re rômin3t-
拉丁语 rômin3re rômin3t-
from rômen rômin- [throat]
源自 rômen rômin- [喉咙，嗓子]

【引伸】
ru.mina.tive
adj.（形容词）
ru.mina.tively
adv.（副词）
ru.mina.tor
n.（名词）