3 sentences

1. 他始终不愿在这浊世中同流合污。

   tā shǐ​zhōng bù yuàn zài zhè zhuó​shì zhōng tóng​liú​hé​wū.

   He was always unwilling to wallow in the mire of this corrupt world.

   Source: Dong Chinese Dictionary

2. 他一生清高，不愿与这喧闹的尘同流合污。

   tā yī​shēng qīng​gāo, bù yuàn yǔ zhè xuān​nào de chén tóng​liú​hé​wū.

   He remained noble and aloof throughout his life, refusing to be corrupted by the clamor of the secular world.

   Source: Dong Chinese Dictionary

3. 哪怕身处困境，他也坚守着一个文人的贞操，绝不同流合污。

   nǎ​pà shēn​chǔ kùn​jìng, tā yě jiān​shǒu zhe yī gè wén​rén de zhēn​cāo, jué bù tóng​liú​hé​wū.

   Even in difficult times, he held onto the integrity of a scholar and refused to be drawn into corruption.

   Source: Dong Chinese Dictionary