4 sentences

1. 反渗透技术常用于净化饮用水。

   fǎn shèn​tòu jì​shù cháng​yòng yú jìng​huà yǐn​yòng​shuǐ.

   Reverse osmosis technology is commonly used to purify drinking water.

   Source: Dong Chinese Dictionary

2. 大量的汗水已经渗透了他的背心。

   dà​liàng de hàn​shuǐ yǐ​jīng shèn​tòu le tā de bèi​xīn.

   A lot of sweat has soaked through his vest.

   Source: Dong Chinese Dictionary

3. 敌方特工正试图渗透进我们的内部系统。

   dí​fāng tè​gōng zhèng shì​tú shèn​tòu jìn wǒ​men de nèi​bù xì​tǒng.

   Enemy agents are trying to infiltrate our internal systems.

   Source: Dong Chinese Dictionary

4. 这种文化影响已经渗透到人们的日常生活中。

   zhè zhǒng wén​huà yǐng​xiǎng yǐ​jīng shèn​tòu dào rén​men de rì​cháng shēng​huó zhōng.

   This cultural influence has permeated people's daily lives.

   Source: Dong Chinese Dictionary