名词
中文翻译：下一级水源段
同义词：
['sub-headwater section', 'lower watershed segment例句：1. The lower head-water section of the river is critical for the ecosystem.（这条河流的下一级水源段对生态系统至关重要。）']
例句：
-
1. The lower head-water section of the river is critical for the ecosystem.
这条河流的下一级水源段对生态系统至关重要。
-
2. The lower head-water section of the reservoir has been identified as a potential source of pollution.
水库的下一级水源段被确认为潜在的污染源。
-
3.The lower head-water section of the river is home to numerous species of fish and aquatic plants.
河流的下一级水源段是多种鱼类和水生植物的家园。