理论lǐlùn 1.人们由实践概括出来的关于自然界和社会的知识的有系统的结论。{theory; principle; systematic conclusion about the knowledge of nature and society drawn through practice} 2.辩论是非;争论;{debate; argue; same as}讲理{jiǎnglǐ}①: 他正在气头上,我不想和他多～。{He is in a fit of anger. I don't want to argue with him.}