rotational irrigation

例句：

1. 1. The farmers used rotational irrigation to ensure the soil was well-watered.
   农民们使用旋转灌溉确保土壤得到充分浇水。
2. 2.This method of rotational irrigation is highly effective in reducing water usage.
   这种方法的旋转灌溉在减少用水方面非常有效。
3. 3.The new irrigation system uses rotational irrigation to efficiently distribute water across the farmland.
   新的灌溉系统使用旋转灌溉高效地将水分配到农田。