headstream
源头;发源地;源流
例句
Second, strengthen the government of land from the headstream;
其二从源头入手加强土地管理；
Soil Erosion Analysis in Headstream Basin of Yellow River
黄河源头区土壤侵蚀现状分析
The history of aesthetics education is long, whether West or China has its development headstream.
审美教育由来已久，在西方和中国都有其发展源流。
