coexistence border

例句：

1. 1. The government is working to resolve the coexistence border between urban and rural areas.
   政府正在努力解决城乡之间的共存边界问题。
2. 2. The researchers found that the coexistence border between two species was not as sharp as they had thought.
   研究人员发现，两种物种之间的共存边界并不像他们想象的那样明显。
3. 3. The coexistence border between different cultures has become increasingly important in today's globalized world.
   不同文化之间的共存边界在当今全球化的世界中变得越来越重要。