3 sentences

1. 政府试图淡化这次事件的严重性。

   zhèng​fǔ shì​tú dàn​huà zhè cì shì​jiàn de yán​zhòng​xìng.

   The government tried to downplay the seriousness of the incident.

   Source: Dong Chinese Dictionary

2. 海水淡化是解决该地区淡水短缺的有效途径。

   hǎi​shuǐ dàn​huà shì jiě​jué gāi dì​qū dàn​shuǐ duǎn​quē de yǒu​xiào tú​jìng.

   Desalination is an effective way to solve the freshwater shortage in the region.

   Source: Dong Chinese Dictionary

3. 随着时间的流逝，那些痛苦的记忆已逐渐淡化。

   suí​zhe shí​jiān de liú​shì, nà​xiē tòng​kǔ de jì​yì yǐ zhú​jiàn dàn​huà.

   With the passage of time, those painful memories have gradually faded.

   Source: Dong Chinese Dictionary