an event marking a unique or important historical change of course or one on which important developments depend; "the agreement was a watershed in the history of both nations" 同义词：landmark, turning point,
the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet; "flood control in the Missouri basin" 同义词：river basin, basin, drainage basin, catchment area, catchment basin, drainage area,
a ridge of land that separates two adjacent river systems 同义词：water parting, divide,
例句与用法
1.
It forms the watershed between the two rivers .. 它成了两条河流的分水岭。
2.
Her visit to india proved to be a watershed in her life . 她的印度之行成了她一生的转折点。
3.
The flumes are used extensively to measure watershed turnoff . 水槽广泛用于测量集水区的经流流量。
4.
Standard guide for monitoring sediment in watersheds 检测分水界沉积的标准指南
5.
A watershed transformation algorithm based on chain code 基于链码的分水岭变换算法
6.
Gis - based prediction of nutrient loss from a small watershed 的小流域养分流失预测
7.
Studying sediment sources in small watershed using 137cs tracing 研究小流域泥沙来源
8.
Application of cisterns in huangshan small watershed 水窖在黄山小流域的应用
9.
Analysis on comprrhensive harness benefit of small watershed 小流域综合治理效益分析
10.
Characters of precipitation variation in jinghe watershed 泾河流域降雨量变化特征分析
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