5 sentences

1. 慢性支气管炎在冬季容易复发。

   màn​xìng zhī​qì​guǎn​yán zài dōng​jì róng​yì fù​fā.

   Chronic bronchitis is prone to flare up in winter.

   Source: Dong Chinese Dictionary

2. 这种慢性的皮肤病很难彻底医好。

   zhè zhǒng màn​xìng de pí​fū​bìng hěn nán chè​dǐ yī hǎo.

   This chronic skin disease is very difficult to cure completely.

   Source: Dong Chinese Dictionary

3. 由于饮食习惯不好，他患上了慢性胃炎。

   yóu​yú yǐn​shí xí​guàn bù hǎo, tā huàn​shang le màn​xìng wèi​yán.

   Due to poor eating habits, he developed chronic gastritis.

   Source: Dong Chinese Dictionary

4. 他的性格比较慢性，做什么事都很有耐心。

   tā de xìng​gé bǐ​jiào màn​xìng, zuò shén​me shì dōu hěn yǒu nài​xīn.

   He has a slow-paced temperament and is very patient in everything he does.

   Source: Dong Chinese Dictionary

5. 这是一种慢性毒药，中毒者不会立刻出现症状。

   zhè shì yī zhǒng màn​xìng dú​yào, zhòng​dú zhě bù huì lì​kè chū​xiàn zhèng​zhuàng.

   This is a slow-acting poison; the victim will not show symptoms immediately.

   Source: Dong Chinese Dictionary