ponder upon

• 考虑； 沉思

ponder upon的用法和样例：

例句

1. You should pause and ponder now.
   你现在应该停下来仔细考虑一下。
2. He began to pore upon religious problems.
   他开始考虑宗教问题。
3. My son started to ponder overit.
   儿子开始沉思了。
4. As a young man, Buddha spent a lot of time meditating upon the meaning of life.
   佛祖年轻时就花很多时间沉思生命的意义。