chew something over

Từ điển tiếng Anh - Cambridge Advanced Learners Dictionary

chew sth over phrasal verb before or after object informal [ chews sth over chewing sth over chewed sth over chewed sth over chewed sth over ]
to think about or discuss something carefully for a long time
• I've been chewing the problem over since last week.
Thesaurus⁺: ↑Thinking and contemplating
Main entry: chew_{phrasal verb}