zhè / piān / lùn wén / duì / jīng jì xué / de / fā zhǎn / zuò chū / le / zhòng yào / de / lǐ lùn gòng xiàn

这篇论文对经济学的发展作出了重要的理论贡献。

This paper makes an important theoretical contribution to the development of economics.