英语：“逆水行舟,不进则退”,怎么说?

题目

英语：“逆水行舟,不进则退”,怎么说?
请问这句话如何翻译成英语,我先抛砖引玉：The assault with navigate ,can't forward will recoil.
请使用有独立主格的结构；结构越简单越好。

答案

Learning is like rowing a boat upstream,either you paddle hard to move forward or you get flushed away.
Learning is like rowing upstream | not to advance is to drop back
Learning is like canoeing against the current,one falls back if he does not try to go forward