a desert region的用法和样例：
- A desert region of northern Saudi Arabia. It is noted for its red sand and sudden violent winds.
- As the Sinai Peninsula is also a desert region, only a very small part of Egypt, approximately 5%, is cultivable land and this is almost entirely located along the Nile valley and delta region.
- A desert has no settled population.
- Nobody likes to live in that desert region.
- They explored this desert region in 1923.
- It is of no use boasting of being rich on a desert island.