最低成本的投入组合
最低成本组合
最小成本组合原则
But games consoles can't be defended in this way - as their combination of high cost and lack of use puts them among the 10 least-effective purchases.
BBC: NEWS | UK | Magazine | The economics of ice cream
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。