pumping loop

例句：

1. 1. The pumping loop is essential for maintaining the water level in the reservoir.
   泵送循环对于保持水库水位至关重要。
2. 2.The pumping loop helps to distribute the water evenly throughout the system.
   泵送循环有助于将水均匀地分布在整个系统中。
3. 3.The pumping loop is a critical component of the irrigation system.
   泵送循环是灌溉系统的关键组成部分。