flood plain flooding

例句：

1. 1. The flood plain is a natural area where water from the nearby river flows during flood seasons.
   洪水平原是一个自然区域，附近河流在洪水季节时水流至此。
2. 2. The flood plain is an important habitat for many species of birds and animals.
   洪水平原是许多鸟类和动物的重要栖息地。
3. 3. The flood plain was once a thriving agricultural area, but now it's mostly barren.
   洪水平原曾经是一个繁荣的农业区，但现在大部分荒芜了。