泗河水系河道变迁的主要因素是黄河夺泗和南北大运河的开发。
The key factors involved in the changes in the Sihe river system are the invasion of the Yellow river and the opening of the Grand Canal.
《水经注》是我国第一部以记载河道水系为纲的综合性地理名著，记载了中国古代大量的自然、人文资源。
On the River Systems is the first famous comprehensive work of geography of our country which gives an account of a vast amount of natural and cultural resources of ancient China.
整个水系向北排水，各个河道朝该方向分叉。
Drainage was to the north and individual channels bifurcate in that direction.
分流制雨水系统旱流放江严重污染了上海市河道水质。
The discharges from separate storm sewer systems in the dry weather do great harm to receiving water in Shanghai.
分流制雨水系统旱流放江严重污染了上海市河道水质。
The discharges from separate storm sewer systems in the dry weather do great harm to receiving water in Shanghai.
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