“逆流”用英语怎么说？

“逆流”的反义词：顺流。...

由于存在着危险的下层逆流，在大部分海岸线附近游泳都不安全。Dangerous undertows make swimming unsafe along most of the coastline.那男孩逆流游去.The boy was swimming in a direction contrary to the current.我们逆流向上游游去.We swam upstream against the current....

“逆流”的拼音为：nì liú...