backwater area

例句：

1. 1. The backwater area is a place where the water flow slows down, causing pollution.
   回水区是一个水流缓慢的地方，导致污染。
2. 2. The backwater area is often associated with poor quality of life and lack of economic opportunities.
   回水区通常与生活质量低下和经济机会缺乏联系在一起。
3. 3.The backwater area was once a thriving fishing village but now faces challenges in maintaining its economy.
   回水区曾经是一个繁荣的渔村，但现在面临着维持经济的挑战。