冲刷下来的 meaning in Chinese

eroded

The gold , washed down the mountain by the river and left in the riverbed near patu , kept on coming
被河流从山区冲刷下来的金子，沉积在八堵附近的河床中，源源不绝。
In support of this idea , later analysis of the sediment at wageningen university in the netherlands proved that many of the brown sand grains were indeed fragments of the dark - colored schists and other rocks that began washing away as the newborn andes rose up
荷兰瓦荷宁罕大学后来对于沉积物的分析，证实了许多棕色沙粒确实是深色片岩及其他岩石的碎屑，这些应该是新生成的安地斯山隆起时冲刷下来的。