unmeasured sediment discharge

例句：

1. 1.The river's unmeasured sediment discharge is a significant environmental concern.
   河流的未测量沉积物排放是一个重大的环境关切。
2. 2. The government has implemented strict regulations to reduce the unmeasured sediment discharge into the ocean.
   政府已实施严格的规定，以减少未测量的沉积物排放入海。
3. 3. The study found that the unmeasured sediment discharge from factories was a major contributor to water pollution.
   研究发现，工厂的未测量沉积物排放是水污染的主要贡献者。