3 sentences

1. 敦煌莫高窟是世界文化遗产。

   dūn huáng Mò​gāo​kū shì shì​jiè wén​huà yí​chǎn.

   The Mogao Caves in Dunhuang are a World Cultural Heritage site.

   Source: Dong Chinese Dictionary

2. 敦煌莫高窟的飞天壁画举世闻名。

   Dūn​huáng Mò​gāo​kū de fēi​tiān bì​huà jǔ​shì​wén​míng.

   The murals of flying apsaras in the Mogao Caves of Dunhuang are world-famous.

   Source: Dong Chinese Dictionary

3. 敦煌莫高窟以其精美的壁画闻名于世。

   Dūn​huáng Mò​gāo​kū yǐ qí jīng​měi de bì​huà wén​míng yú shì.

   The Mogao Caves in Dunhuang are world-famous for their exquisite murals.

   Source: Dong Chinese Dictionary