相關單詞近義詞 economical 節(jié)儉的, lucrative 合算的, money-making 賺錢, profitable 有益的, gainful 有利益的, commercial 商業(yè)的, worthwhile 值得(做)的, cost-efficient 有成本效益的...臨近詞cost, Costescu 返回 cost-effectively