5 sentences

1. 这里的衣服长时间不晒都会霉的。

   zhè​lǐ de yī​fu cháng​shí​jiān bù shài dōu huì méi de.

   Clothes here will get moldy if they aren't aired out in the sun for a long time.

   Source: Dong Chinese Dictionary

2. 由于长时间工作，他感到极度疲劳。

   yóu​yú cháng​shí​jiān gōng​zuò, tā gǎn​dào jí​dù pí​láo.

   He felt extremely fatigued due to working long hours.

   Source: Dong Chinese Dictionary

3. 长时间保持不正确的坐姿容易损伤腰椎。

   cháng​shí​jiān bǎo​chí bù zhèng​què de zuò​zī róng​yì sǔn​shāng yāo​zhuī.

   Maintaining an incorrect sitting posture for a long time can easily damage the lumbar spine.

   Source: Dong Chinese Dictionary

4. 股市在经历了长时间的低迷后，终于迎来了牛市。

   gǔ​shì zài jīng​lì le cháng​shí​jiān de dī​mí hòu, zhōng​yú yíng​lái le niú​shì.

   After a long period of sluggishness, the stock market finally entered a bull market.

   Source: Dong Chinese Dictionary

5. 这种简单的早餐并不能长时间缓解他的饥饿感。

   zhè zhǒng jiǎn​dān de zǎo​cān bìng bù néng cháng​shí​jiān huǎn​jiě tā de jī'è​gǎn.

   This simple breakfast won't keep his hunger away for very long.

   Source: Dong Chinese Dictionary