ponder

The philosopher spent many hours alone in his study to ponder the meaning of life.

(Chinese) 这位哲学家独自在书房里花了许多小时来沉思人生的意义。

She sat by the window to ponder whether she should accept the job offer in a different city.

(Chinese) 她坐在窗边沉思是否应该接受另一个城市的工作邀约。