I region associated antigen

例句：

1. 1. The region is rich in minerals and forests.
   该地区富含矿物和森林。
2. 2. The region has a unique culture that attracts tourists from all over the world.
   该地区拥有独特的文化，吸引了来自世界各地的游客。
3. 3. The region's economy is growing rapidly due to its natural resources.
   该地区的经济增长迅速，得益于其自然资源。