The assumption that a consumer will always benefit from additional consumption. The demand for some goods may have a finite limit, but it is likely that there is some good or service a consumer would benefit from having more of.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。