向河的下游;顺流而下
in the same direction as the flow of water in the river
We set off down the river.
We could see dead fish floating away down the river.
They began rafting down river towards the rapids.
The incident occurred further down the river.
The problem is that the sediment that once flowed down river is now trapped.
About twenty miles down river, there was a small village.
See also: river