deal in something

Từ điển tiếng Anh - Cambridge Advanced Learners Dictionary

deal in sth phrasal verb [ dealt in sth dealt in sth dealt in sth deals in sth dealing in sth ]
to buy and sell particular goods as a business
• They mainly deal in rare books.
Thesaurus⁺: ↑Buying and selling in general
Main entry: deal_{phrasal verb}