作者在第二章详细论述了城乡教育资源不均衡的成因。Zuòzhě zài dì èr zhāng xiángxì lùnshù le chéngxiāng jiàoyù zīyuán bù jūnhéng de chéngyīn.In the second chapter, the author discusses in detail the causes of the imbalance between urban and rural educational resources.
老师在课上论述了这个问题的几个方面。Lǎoshī zài kè shàng lùnshù le zhège wèntí de jǐ gè fāngmiàn.In class the teacher discussed several aspects of this problem.
这篇文章清楚地论述了环境保护的重要性。Zhè piān wénzhāng qīngchu de lùnshù le huánjìng bǎohù de zhòngyàoxìng.This article sets out clearly why environmental protection matters.