palaeocurrent

例句：

1. 1.The ancient river flowed through the desert for miles.
   这条古老的河流穿过沙漠，流了好几英里。
2. 2. Paleocurrents have been studied to understand how ocean currents form.
   研究古流向是为了了解海洋洋流是如何形成的。
3. 3. The palaeocurrent data suggests that the region has been stable for thousands of years.
   这些古流向的数据表明该地区已经稳定了数千年。