3 sentences for 严谨 (yán​jǐn — well-organized)

1. 这篇文章的结构非常严谨。

   zhè piān wén​zhāng de jié​gòu fēi​cháng yán​jǐn.

   The structure of this article is very rigorous.

   Source: Dong Chinese Dictionary

2. 这篇文章结构严谨，逻辑性很强。

   zhè piān wén​zhāng jié​gòu yán​jǐn, luó​jí​xìng hěn qiáng.

   The article is well-structured and highly logical.

   Source: Dong Chinese Dictionary

3. 文章的前后内容互相呼应，结构非常严谨。

   wén​zhāng de qián​hòu nèi​róng hù​xiāng hū​yìng, jié​gòu fēi​cháng yán​jǐn.

   The different parts of the article echo each other, creating a very rigorous structure.

   Source: Dong Chinese Dictionary