4 sentences

1. 藏族人民主要居住在青藏高原。

   Zàng​zú rén​mín zhǔ​yào jū​zhù zài Qīng Zàng gāo​yuán.

   The Tibetan people mainly live on the Qinghai-Tibet Plateau.

   Source: Dong Chinese Dictionary

2. 青藏高原是由多个地块拼贴而成的。

   Qīng Zàng gāo​yuán shì yóu duō gè dì​kuài pīn​tiē ér chéng de.

   The Qinghai-Tibet Plateau was formed by the accretion of multiple tectonic blocks.

   Source: Dong Chinese Dictionary

3. 长江的水源位于青藏高原的冰川地带。

   Cháng Jiāng de shuǐ​yuán wèi​yú Qīng Zàng gāo​yuán de bīng​chuān dì​dài.

   The source of the Yangtze River is located in the glacial regions of the Qinghai-Tibet Plateau.

   Source: Dong Chinese Dictionary

4. 由于距离遥远，青藏两地的方言存在较大差异。

   yóu​yú jù​lí yáo​yuǎn, Qīng Zàng liǎng dì de fāng​yán cún​zài jiào dà chā​yì.

   Due to the great distance between them, there are significant differences between the dialects of Qinghai and Tibet.

   Source: Dong Chinese Dictionary