3 sentences

1. 这篇文章逻辑不通，读起来很费解。

   zhè piān wén​zhāng luó​ji bù​tōng, dú qi​lai hěn fèi​jiě.

   The logic in this article is flawed, making it very difficult to understand.

   Source: Dong Chinese Dictionary

2. 他那番含糊其辞的话实在令人费解。

   tā nà fān hán​hu​qí​cí de huà shí​zài lìng rén fèi​jiě.

   His vague remarks were truly baffling.

   Source: Dong Chinese Dictionary

3. 他这人真是个奇葩，总是做出一些令人费解的事情。

   tā zhèi rén zhēn shì gè qí​pā, zǒng​shì zuò​chū yī​xiē lìng rén fèi​jiě de shì​qing.

   He's a real character, always doing inexplicable things.

   Source: Dong Chinese Dictionary