Definition
Moving or situated in the direction of a river's current; towards the lower part of a river.
顺流而下
They paddled their canoes down the river.
他们划着独木舟顺流而下。
The factory's wastewater flowed down the river, polluting it.
工厂的废水顺流而下，污染了河流。
We hiked down the river for several miles before finding a suitable campsite.
我们沿着河流徒步了几英里，才找到合适的营地。