water swelling and conservation

• 吸水保水

water swelling and conservation的用法和样例：

例句

1. A river warden, on the water, has absolute power and knows all that goes on there.
   做水保的人照例是水上一霸，凡是属于水面上的事情他无有不知。
2. The runoff and sediment yield is affected by the process of rainfall and the function of water and soil conservation measurement.
   弃土场区域内产流受到降雨特征和水保措施功能发挥的影响。