Swam downriver向下游游泳;顺流独木舟赛
downriver channels下行通道
downriver ventilation下行风
downriver boat下水船
downriver downstream船从上游向下游行驶
downriver lower下游的
downriver channel下游河道
downriver area下游区
Huaihe River downriver淮河下游
ADV（副词） Something that is moving downriver is moving toward the mouth of a river, from a point further up the river. Something that is downriver is toward the mouth of a river. 向下游; 在下游
By 9:30 we had cast off and were heading downriver.
在9:30之前我们已经起航并且向下游行驶。
ADJ（形容词） Downriver is also an adjective. 下游的 [ADJ n]
...downriver factories dispensing billows of smoke.
...排放滚滚浓烟的下游工厂。