内陆地区
6.Moreover villagers living in the frontier and inner areas had built a lot of village fortresses for self-defence.
8.The vast basin of the Amazon River in northern South America. It remains largely unpopulated and undeveloped, especially in the interior.
9.Better working conditions and higher wages have drained many university students away from the inland areas.
10.The small coastal town of Broome, in northwest Australia, is an outpost in the vast Outback.


