water-softening plant

例句：

1. 1.The water-softening plant is essential for maintaining the quality of tap water.
   软化水设备对于保持自来水的质量至关重要。
2. 2.The plant's ability to remove hardness from water has been praised by environmentalists.
   该植物从水中去除硬度的能力受到了环保人士的赞扬。
3. 3. The plant's design and operation are carefully monitored to ensure optimal performance.
   该设备的设计和运行都经过仔细监控，以确保最佳性能。