相关单词近义词 economical 节俭的, lucrative 合算的, money-making 赚钱, profitable 有益的, gainful 有利益的, commercial 商业的, worthwhile 值得(做)的, cost-efficient 有成本效益的...临近词cost, Costescu相似词cost sb a pretty penny idiom, cost sb dear idiom, cost, charge, etc. the earth idiom, cost-cutting, cost-of-living allowance, cost-of-living index, Costa Rica, Costa Rican, 返回 cost-effective