runoff separation的用法和樣例：
例句
- Compared with runoff division method, the rainfall deduction method is characterized with simple calculation and a reasonable result but without additional NSP monitoring data.
與傳統的徑流分割法相比，降雨量差值法能利用現有水文水質資料而無需增加監測項目，即可對流域非點源污染負荷作出估算，計算過程簡單，結果合理。
辭彙搭配
- run off 逃跑
