3 sentences

1. 这里的景色令人心旷神怡。

   zhè​lǐ de jǐng​sè lìng rén xīn​kuàng​shén​yí.

   The scenery here is refreshing and pleasant.

   Source: Dong Chinese Dictionary

2. 望着无边的海洋，我感到心旷神怡。

   wàng zhe wú​biān de hǎi​yáng, wǒ gǎn​dào xīn​kuàng​shén​yí.

   Looking out at the boundless ocean, I felt refreshed and happy.

   Source: Dong Chinese Dictionary

3. 窗外鸟语花香，伴着轻柔的音乐，令人感到心旷神怡。

   chuāng wài niǎo​yǔ​huā​xiāng, bàn zhe qīng​róu de yīn​yuè, lìng rén gǎn​dào xīn​kuàng​shén​yí.

   The birdsong and fragrance of flowers outside, accompanied by soft music, are truly refreshing.

   Source: Dong Chinese Dictionary