chew on
US /tʃuː ɑːn/
UK /tʃuː ɑːn/

1.
仔细考虑, 认真思考
to think about something carefully before making a decision
:
•
I need some time to chew on this idea before I give you an answer.
我需要一些时间来仔细考虑这个想法,然后才能给你答复。
•
The committee will chew on the proposal for a few days.
委员会将仔细研究这项提案几天。