Definition
p.w.
river systemdrainage network
Examples
- 水系。Zhōngguó de shuǐ xì fēicháng fùzá.China's river system is very complex.
- 水系。Zhège shuǐ xì fùgài miànjī hěn dà.This drainage network covers a large area.
- 水系。Dìlǐxuéjiā zhèngzài yánjiū zhè tiáo héliú de shuǐ xì.Geographers are studying the river system of this river.
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