ruminate /ˈruːmɪˌneɪt/ ( ruminating, ruminated, ruminates )

• 1. 

  V-I If you ruminate on something, you think about it very carefully. 认真思考 [正式]

  例：

  He ruminated on the terrible wastefulness that typified American life.

  他认真思考了美国生活中典型且非常严重的浪费问题。

• 2. 

  V-I When animals ruminate, they bring food back from their stomach into their mouth and chew it again. (动物)反刍 [技术]