free water clearance

例句：

1. 1. The company aims to reduce its carbon footprint by implementing free water clearance measures.
   该公司旨在通过实施自由水清除措施来减少其碳足迹。
2. 2. During the rainy season, the river's free water clearance rate increases significantly.
   雨季时，河流的自由水清除率显著增加。
3. 3.The government has implemented a series of policies to promote the free water clearance of agricultural runoff.
   政府已经实施了一系列政策来促进农业径流的自由水清除。