biogenic dam

• 生物堤

biogenic dam的用法和样例：

例句

1. The river keeps rising and the dam is threatened.
   河水不断上涨，大堤出现险情。
2. This is the present riverway of the lower reach.Since then, people began to build more dams to prevent against floods, which caused the sedimentation of mud and sand on the dam.
   自此以后，人们筑堤防洪，河流泥沙被约束在堤内大量沉积，导致河床日益淤高。