沉思的

例句：

1. 1. She was lost in thought for hours before she could speak.
   她沉思了几个小时之后才说话。
2. 2. The old man sat there with his eyes closed, deep in thought.
   老人坐在那里，眼睛紧闭，深陷沉思。
3. 3. He often spends hours in deep contemplation over the meaning of life.
   他经常花几个小时深思生活的意义。