furrow irrigation的用法和樣例：
例句
- Principles outlined for furrow irrigation apply to related methods of irrigation.
簡述的溝灌原理也適用於相近的灌水方法。 - Extensive land leveling is often required because the topography must be smoother than for furrow irrigation.
由於畦灌的地形必須比溝灌的平坦，因此，常常需要大面積平整土地。 - Extensive land leveling is often required because the topography must be smoother than for furrow irrigation.
由於畦灌的地形必須比溝灌的平坦，因此，常常需要大面積平整土地。
