Down River Up Stream的意思|示意

The agitating and dredging process and its effect in the down stream of Yellow River during the third experiment of regulating water and sediment have been summed up in this paper.

概述了黄河第三次调水调沙试验下游泥沙扰动调度实施过程及扰沙效果。

A couple of girl students read English aloud while walking up and down the gravel path around the river where a sort of stream rose forming a thin mist.

路边的小溪笼罩在薄雾中，几个同学沿着小路边走边朗诵着英语。