cogito

例句：

1. 1. The philosopher pondered the meaning of life for hours.
   这位哲学家沉思人生的意义几个小时。
2. 2.She cogitated over the solution to the problem for days.
   她花了好几天才想出解决这个问题的办法。
3. 3. He cogitated about his future plans in the morning.
   他在早上思考他的未来计划。