理论贡献 lǐlùngòngxiàn theoretical contribution Origin Definitions Defs Strokes Stroke Words Sentences Sents 理论 理論 lǐlùn noun theory a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained; doctrine贡献 貢獻 gòngxiàn noun contribution a beneficial act or service performed for a country or the public; a contribution