bounded region

例句：

1. 1.The boundary between our two countries is marked by a river.
   我们两国之间的边界是由一条河划分的。
2. 2. The researcher found that the bounded region had a significant impact on the ecosystem.
   研究者发现，这个有界区域对生态系统产生了重大影响。
3. 3. The scientists are studying the bounded region to understand its potential for development.
   科学家们正在研究这个有界区域，以了解其发展的可能性。