mull over
近义词：reflect，deliberate，meditate，mull，thinkover，excogitate，speculate，contemplate，chewover，ponder，ruminate，muse，
英英释义
Verb
- reflect deeply on a subject;
"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"