spend time in considering (a fact, difficulty, etc.)
"I mulled over the events of the afternoon"
"philosophers have speculated on the question of God for thousands of years"
"The scientist must stop to observe and start to excogitate"
I stood indecisively, then walked out..for a deep ponder.
出自： J. Gash
Wang Lu thought of his land and pondered..how he could get back to it.
出自： P. S. Buck
He pondered the problem for some time.
出自： A. Djoleto
Edward Shaw never pondered Scoleri's guilt or innocence.
Give me a few days to ponder over it.
The young captain is pondering over a thorny problem.
Successive committees have pondered over this problem without finding a solution.
She pondered bitterly upon the meaning of life.