mull something over
phrasal verb with mull verb [ T ] uk/mʌl/ us/mʌl/
仔细思考，反复考虑
to think carefully about something for a long time
I need a few days to mull things over before I decide if I'm taking the job. 在决定是否做这份工作前，我需要几天时间仔细考虑。