ecstrophy

例句：

1. 1.The river ecstrophes over the land.
   河水外流。
2. 2. The flood caused significant ecstrophy in the area.
   洪水导致了该地区的大量流失。
3. 3. The soil was drained away by the ecstrophy of rainwater.
   雨水的流失导致土壤被冲走。