川かわを下くだる

expression, godan verb (-ru)

go down a river; descend a river

Used for traveling downstream by boat or following the river's course toward its mouth.

• 彼かれらはカヌーで川かわを下くだった。

  They went down the river by canoe.

• この川かわを下くだると大おおきな湖みずうみに出でる。

  If you go down this river, you'll reach a large lake.