companyon Basic wordsalso onCEFR Elementary (A2)? CEFR Upper intermediate (B2)? CEFR Advanced (C1)? Band 1 (BND1)? Band 3 (BND3)? 公司 co co(abbreviation) 一氧化碳(carbon monoxide) companies companies(noun) 企业,伙伴(company的复数形式),公司 company company(noun) 公司 Forms abbreviationnoun co companies company