arctic drainage

• 北极水系

arctic drainage的用法和样例：

例句

1. The difference is mainly in the tone not in the drainage pattern or landform.
   所不同的主要在色调，而不在于水系型式或地形。
2. Drainage was to the north and individual channels bifurcate in that direction.
   整个水系向北排水，各个河道朝该方向分叉。