4 sentences

1. 数小时后，就是早晨了。

   shù​xiǎo​shí hòu, jiù​shì zǎo​chen le.

   A few hours later it was morning.

   Source: CCMatrix

2. 20分钟的午餐将为您提供数小时的能量。

   20 fēn​zhōng de wǔ​cān jiāng wèi nín tí​gōng shù​xiǎo​shí de néng​liàng.

   A 20-minute lunch will provide you with hours of energy.

   Source: CCMatrix

3. 油性皮肤在清洁后数小时内甚至会感到油腻。

   yóu​xìng pí​fū zài qīng​jié hòu shù​xiǎo​shí nèi shèn​zhì huì gǎn dào yóu​nì.

   Oily skin can even feel greasy within hours of cleansing.

   Source: CCMatrix

4. 水的实际分子每毫秒变化一次，但这种模式持续数小时甚至数年。

   shuǐ de shí​jì fēn​zǐ měi háo​miǎo biàn​huà yī​cì, dàn zhè​zhǒng mó​shì chí​xù shù​xiǎo​shí shèn​zhì shù nián.

   The actual molecules of water change every millisecond, but the pattern persists for hours or even years.

   Source: CCMatrix