出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第279页（220字）
比喻经济上增加收入，节省开支，例在经济困难时期，开源节流是渡过难关的有效办法。
When there are financial difficulties，one of the ways to overcome them is to tap new resources and economize on expenditures