irrigation by pumping

例句：

1. 1. The farmer used to irrigate his crops with rainwater.
   这位农民过去用雨水灌溉他的庄稼。
2. 2.Irrigation is essential for maintaining the health of our plants.
   灌溉对于保持我们植物的健康至关重要。
3. 3. The city has implemented a new irrigation system to reduce water usage.
   该市实施了一种新的灌溉系统以减少用水。